Cheesy Brussels Sprouts Bake

Welcome to the ultimate guide for creating the most delectable **Brussels Sprouts Gratin**, a dish so irresistibly cheesy and flavorful, it promises to convert even the most skeptical palates! This elegant side dish effortlessly complements a wide array of main courses, making it an indispensable addition to your culinary repertoire, especially during festive gatherings. Imagine tender, perfectly cooked Brussels sprouts bathed in a sumptuously velvety cheese cream sauce, all crowned with a golden, buttery, and irresistibly crispy breadcrumb topping. Beyond its luxurious taste and texture, this impressive casserole offers the invaluable convenience of being prepared in advance, allowing you to savor precious moments with loved ones rather than rushing in the kitchen on the big day.

“Absolutely divine and incredibly straightforward! I adore this recipe, and my sister and I practically compete for the last serving of leftovers every time!”

Brussels Sprouts Gratin in oval baking dish with spoon scooping some up.

What Exactly is a Gratin? Unveiling the Culinary Art

The term gratin originates from French cuisine and refers to a culinary technique where a dish is topped with a browned crust, typically made of breadcrumbs, grated cheese, or both, often combined with a rich sauce. This method, known as au gratin or gratinée, creates a delightful textural contrast between a soft, tender interior and a crisp, golden exterior. While commonly associated with potatoes (think Dauphinoise or Scalloped Potatoes), gratin dishes can feature a variety of vegetables, pasta, or even seafood. They are characteristically baked in shallow, oven-safe dishes, frequently oval or rectangular, designed to maximize the surface area for that coveted crispy top. Our **Brussels Sprouts Gratin** exemplifies this classic technique, transforming humble Brussels sprouts into a sophisticated and utterly comforting delicacy.

Why This Cheesy Brussels Sprouts Gratin Recipe is an Absolute Keeper!

This isn’t just another side dish; it’s a carefully crafted culinary experience designed to impress and satisfy. Here’s why our **Brussels Sprouts Gratin with Bacon** stands out as a true staple:

First, the timeless pairing of smoky bacon with earthy Brussels sprouts is simply unmatched. The savory, crisp bits of bacon woven throughout the dish infuse every bite with an irresistible depth of flavor, making this gratin a hearty and memorable accompaniment to any meal.

The core of this dish lies in its luxurious cheesy cream sauce. While surprisingly simple to prepare, this sauce delivers an unparalleled richness and silky texture. We opt for sharp white Cheddar cheese, which introduces a delightful tanginess that perfectly balances the smoky bacon and the robust, slightly bitter notes of the Brussels sprouts. This creates a harmonious flavor profile that is both complex and incredibly satisfying.

A gratin wouldn’t be complete without its signature topping, and ours is truly exceptional. Crafted from buttery brioche breadcrumbs and nutty Parmesan cheese, this crispy crust provides the ultimate textural contrast. It’s the perfect counterpoint to the tender Brussels sprouts and the creamy sauce, adding an inviting crunch that elevates the entire dish. These elements combined make every spoonful a delight.

Perhaps one of its most appealing features, especially for busy hosts, is its make-ahead convenience. The entire casserole base can be assembled and refrigerated for up to two days before baking. This makes it an ideal choice for holidays or special occasions when oven space and prep time are at a premium. Imagine the ease of simply popping this gourmet side dish into the oven while you finalize other preparations, ensuring a stress-free and delicious meal.

Ultimately, with its captivating blend of cheesy, bacony goodness and irresistible textures, this **Cheesy Brussels Sprouts Gratin** possesses the remarkable power to transform even the most ardent Brussels sprouts skeptics into enthusiastic fans. It’s a dish that not only tastes incredible but also creates lasting culinary memories.

This cheesy Brussels sprouts recipe is truly:

  • Effortlessly Delicious! Simple steps lead to extraordinary flavor.
  • The Quintessential Holiday Side Dish. Perfect for Thanksgiving, Christmas, or any special occasion.
  • A Textural Masterpiece! Fresh breadcrumbs and Parmesan cheese create a golden, crispy crust that beautifully tops off this decadent side.
  • Perfect for Planning Ahead! Prepare in advance and bake when ready, making meal prep a breeze.
Brussels Sprouts Gratin in oval baking dish with spoon scooping some up.

Crafting Your Own Brussels Sprouts Gratin: A Step-by-Step Culinary Journey

Essential Recipe Ingredients:

To embark on this delightful culinary adventure and create the perfect **Brussels Sprouts Gratin**, you’ll need the following high-quality ingredients. A comprehensive list with exact quantities can be found in the detailed recipe card below.

Ingredients for Brussels Sprouts Gratin in glass bowls.

Ingredient Notes and Smart Substitutions:

  • Brussels Sprouts: For the best texture and flavor, select small to medium-sized Brussels sprouts. Ensure you remove any tough, discolored, or yellow outer leaves and trim the stem end cleanly. Halving them allows for even cooking and better absorption of the creamy sauce.
  • Bacon: We recommend using regular sliced bacon for its rich flavor and crispy texture. If you prefer or require an alternative, turkey, beef, or even plant-based soy bacon can be used. However, be mindful that non-pork options might render less fat, so you may need to supplement with a tablespoon or two of butter when making the roux to achieve the desired consistency. Avoid strongly flavored bacon, such as maple, as its sweetness can clash with the savory cheese.
  • All-Purpose Flour: A small, carefully measured amount of all-purpose flour is crucial for creating a stable, smooth, and lump-free cheese sauce. It acts as a thickening agent for the roux, preventing the cheese from curdling or “breaking” when added to the hot cream.
  • Cheddar Cheese: Our top recommendation is sharp white Cheddar cheese. Its robust, tangy flavor cuts through the richness of the cream and beautifully complements the bacon and Brussels sprouts, adding depth and complexity. While yellow Cheddar will work just fine, white Cheddar often offers a more elegant visual presentation. For those seeking alternatives, Gruyère cheese provides a nutty, earthy flavor, Fontina offers a mild, buttery creaminess, and Brie (rind removed) melts into a wonderfully smooth, rich sauce.
  • Heavy Cream: Also known as heavy whipping cream, this ingredient is vital for the luxurious texture of the sauce. Heavy cream typically contains a higher milk fat percentage (around 36%) compared to regular whipping cream (approximately 30%). This higher fat content ensures a richer, more stable sauce that won’t curdle easily and provides that irresistible mouthfeel.
  • Breadcrumbs: The type of breadcrumbs significantly impacts the final texture of your gratin. A buttery-flavored bread, such as brioche, creates an exceptionally rich and golden topping. Its subtle sweetness and tender crumb, when ground coarsely, fry beautifully. If brioche isn’t available, plain fresh breadcrumbs made from good quality white bread will still yield excellent results. Avoid dried, pre-packaged breadcrumbs if possible, as their texture and flavor are often inferior.

Detailed Step-By-Step Instructions:

  • Begin by gathering and precisely prepping all your ingredients. This mise en place ensures a smooth and efficient cooking process.
  • Preheat your oven to a steady 400 degrees Fahrenheit (200 degrees Celsius).
  • Prepare your chosen baking dish – an oval gratin-style dish is ideal – by lightly buttering, oiling, or spraying it with cooking spray. Ensure the dish is large enough to comfortably hold all the Brussels sprouts. Set it aside for later.
  • Thoroughly prepare the Brussels sprouts: carefully remove any rough, yellowed, or damaged outer leaves and trim the tough stem ends. Then, slice each sprout neatly in half lengthwise.
  • Set up an ice bath: fill a large bowl with ice and water. Meanwhile, bring a large, deep skillet or saucepan of generously salted water to a rolling boil. We recommend using about two tablespoons of salt per gallon of water to properly season the sprouts from within.
  • Carefully immerse the halved Brussels sprouts into the boiling salted water. Cook for approximately 3-4 minutes, or until they are almost tender-crisp. You should be able to easily pierce them with a knife, but still feel a slight resistance in the center, indicating they are cooked but not mushy, and they should retain their vibrant bright green color.
  • Promptly drain the blanched Brussels sprouts and transfer them immediately into the prepared ice bath. This rapid cooling halts the cooking process, preserving their color and crisp texture.
  • Once thoroughly chilled, drain the Brussels sprouts again from the ice bath and gently blot them completely dry with a paper towel or a clean kitchen towel. Excess moisture can dilute your sauce, so this step is important.
Brussels sprouts cut in half in nonstick skillet.
Blanched Brussels sprouts halves in ice bath in glass bowl.
  • Using the same deep skillet or sauté pan, cook the diced bacon over medium heat until it becomes wonderfully crispy and golden brown.
  • Remove the crispy bacon bits from the pan with a slotted spoon and drain them on a paper towel-lined plate to absorb excess fat.
  • Set the cooked bacon aside, but importantly, reserve the flavorful bacon drippings in the pan. These drippings will form the base of your rich cheese sauce.
Cooked crispy bacon in nonstick skillet.
  • Whisk the all-purpose flour directly into the reserved bacon drippings in the skillet. This creates a roux, the thickening agent for your sauce.
  • Continue cooking the roux over low heat for 1 to 2 minutes, stirring constantly. This cooks out the raw flour taste.
Flour being whisked into bacon drippings in nonstick skillet.
  • Gradually stir in the heavy cream into the roux, whisking continuously to prevent lumps. Increase the heat to medium-low and bring the mixture to a gentle simmer.
  • Allow the sauce to cook for 2 to 3 minutes, stirring occasionally, until it begins to visibly thicken.
  • Remove the pan from the heat. Add the shredded cheese, a handful at a time, whisking thoroughly after each addition until the cheese has completely melted and the sauce is smooth and creamy.
  • Season the cheese sauce with salt and freshly ground black pepper to taste. If you desire a hint of warmth and spice, add a tiny pinch of cayenne pepper – it enhances the flavor without overpowering it.
Creamy sauce in nonstick skillet.
Cheese added to cream sauce in nonstick skillet.
Cheese sauce in nonstick skillet with blue spatula.
  • Return the blanched Brussels sprouts and crispy bacon bits to the cheese sauce in the skillet. Gently stir to ensure all the sprouts are thoroughly coated in the rich, creamy sauce.
  • NOTE: Do not be alarmed if the cheese sauce appears to thicken immediately upon adding the cooled Brussels sprouts. This is a normal reaction due to the temperature difference.
  • Carefully transfer the entire mixture of Brussels sprouts, bacon, and cheese sauce into your prepared baking dish, spreading it evenly.
Blanched Brussels sprouts and bacon added to cheese sauce in nonstick skillet.
Blanched Brussels sprouts and bacon combined with the cheese sauce in nonstick skillet.
Brussels sprouts in cheese sauce are transferred to an oval baking dish.
  • In a small separate bowl, combine the softened butter, the coarsely ground breadcrumbs (preferably brioche), and the freshly grated Parmesan cheese.
  • Using your hands, gently mix these ingredients together until the butter is thoroughly incorporated and the breadcrumbs are evenly coated and moist. This ensures a beautifully golden and crispy topping.
  • Generously scatter this prepared breadcrumb mixture evenly over the top of the Brussels sprouts in the baking dish.
Breadcrumbs, cheese and butter mixed together in glass bowl.
Brussels Sprouts Gratin fully assembled with breadcrumb topping in oval baking dish ready to bake.
  • Place the gratin in the preheated oven and bake for 20 to 25 minutes, or until the sauce is bubbly around the edges and the breadcrumb topping is beautifully golden brown and crispy.
  • Keep an eye on the topping: if the breadcrumbs start browning too quickly, you can loosely cover the dish with aluminum foil around the 15-minute mark to prevent over-browning while the gratin continues to heat through.
  • The result? A truly magnificent dish of cheesy, crispy, and utterly delicious Brussels sprouts!
  • Serve immediately to enjoy its peak freshness and warmth.
Fully baked Brussels Sprouts Gratin on a blue striped towel with a serving spoon.

Chef’s Secrets: Expert Tips and Tricks for Gratin Perfection

  • Protect Your Hands While Prepping: Trimming and halving numerous Brussels sprouts with a paring knife can be tough on your thumb. To avoid nicks and discomfort, consider wearing a disposable kitchen glove or a fingertip cot. This small step can make prep much more enjoyable.
  • The Power of the Ice Bath: Don’t skip the ice bath after blanching your Brussels sprouts! This critical step immediately stops the cooking process, preventing them from becoming mushy. The cold shock also helps to “set” their vibrant green color, ensuring your gratin is as visually appealing as it is delicious.
  • Room Temperature Cheese is Key: For the smoothest, most homogenous cheese sauce, always allow your shredded cheese to come to room temperature before adding it to the warm cream mixture. Cold cheese can cause the sauce to clump or become stringy, making it harder to melt evenly and achieve that desired velvety texture.
  • Homemade Brioche Breadcrumbs for the Win: The choice of bread for your topping can make a significant difference. A buttery, slightly sweet bread like brioche creates exceptionally flavorful and golden breadcrumbs. To make fresh breadcrumbs, simply tear slices of brioche (or any good quality bread) into pieces, place them in a food processor, and pulse until they are coarsely ground. You can even keep extra brioche in your freezer specifically for making fresh breadcrumbs for various gratin dishes.
Brussels Sprouts Gratin in oval baking dish with spoon scooping some up.

Frequently Asked Questions About This Brussels Sprouts Gratin

What other types of cheese can I use in Brussels Sprouts au Gratin?

While sharp Cheddar is a fantastic choice for its robust flavor and widespread availability, feel free to experiment with other cheeses based on your preference or what you have on hand. Gruyère offers a wonderfully nutty and earthy flavor profile, Fontina provides a delicate, buttery richness and melts beautifully, and Brie (with the rind removed) will yield an incredibly creamy and luxurious sauce. Always ensure the cheese is shredded or finely chopped before incorporating it into the sauce for optimal melting.

Can I use pre-made breadcrumbs for the topping?

While fresh breadcrumbs are highly recommended for their superior texture and fresher flavor, offering a crispier and more satisfying crust, you can certainly use store-bought breadcrumbs in a pinch. If opting for pre-made, coarse panko breadcrumbs are generally the best substitute as they provide a similar light and airy crunch. Avoid very fine, dry breadcrumbs, which can become too dense or hard when baked.

Can Brussels Sprouts Gratin be made ahead of time for convenience?

Absolutely! This **Brussels Sprouts Gratin** is an excellent make-ahead dish, perfect for simplifying your holiday or dinner party preparations. You can fully assemble the casserole (combining the sprouts, bacon, and cheese sauce) up to two days in advance. However, hold off on adding the breadcrumb topping until just before you’re ready to bake. When it’s time to cook, let the assembled casserole sit at room temperature for about 30 minutes to take the chill off, then add the topping and bake at 400 degrees Fahrenheit. You may need to increase the baking time slightly if the dish is still quite cold from the refrigerator.

Brussels Sprouts Gratin in oval baking dish with spoon scooping some up.

Proper Storage for Your Delicious Gratin:

  • Any leftover **Brussels Sprouts Gratin** should be promptly refrigerated in an airtight container within two hours of cooking. To reheat, place individual portions in the oven or toaster oven at 350 degrees Fahrenheit (175 degrees Celsius) until warmed through and the topping crisps up again. For larger portions, cover loosely with foil and reheat in a conventional oven. For best quality, consume within five days.

Perfect Pairings: What to Serve with Brussels Sprouts au Gratin

This rich and flavorful **Brussels Sprouts Gratin** makes an outstanding accompaniment to a variety of main courses. Its creamy texture and savory notes provide a wonderful balance to roasted meats and poultry. Here are some ideal pairings:

  • **Roast Turkey Breast with Traditional Stuffing:** A classic holiday combination, the gratin adds a touch of decadence to your festive feast.
  • **Chili-Glazed Meatloaf:** The subtle spice of the meatloaf beautifully contrasts with the creamy, cheesy gratin.
  • **Baked BBQ Chicken Thighs:** The smoky sweetness of BBQ chicken finds a perfect match in the savory bacon and cheese of the gratin.
  • **Garlic Herb Butter Roast Chicken with Root Vegetables:** A comforting and wholesome meal that is elevated by the rich gratin.
  • **40 Clove Garlic Chicken:** The intense garlic flavors of this chicken dish are wonderfully mellowed and complemented by the creamy gratin.

Discover More Irresistible Brussels Sprouts Recipes You’ll Adore!

If you’ve fallen in love with Brussels sprouts through this gratin, there are many more delicious ways to enjoy this versatile vegetable. Explore these fantastic recipes to expand your Brussels sprouts repertoire:

  • **Shaved Brussels Sprouts Salad:** A refreshing and lighter take, perfect for a vibrant side.
  • **Sriracha Sweet Chili Brussels Sprouts:** For those who enjoy a kick of heat and a touch of sweetness.
  • **Brussels Sprouts Casserole:** Another hearty, comforting casserole option, often featuring wild rice.
  • **Quick Pickled Brussels Sprouts with Jalapeno:** A tangy, zesty, and spicy condiment that adds a bright contrast to any meal.

For an extensive collection of vegetable-focused dishes, be sure to visit all my Vegetable Side Dish Recipes – From A Chef’s Kitchen.

Brussels Sprouts Gratin in oval baking dish with spoon scooping some up.
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4.82 from 11 votes

Brussels Sprouts Gratin with Bacon & Sharp Cheddar

By Carol | From A Chef’s Kitchen
This cheesy **Brussels Sprouts Gratin** is the perfect elegant side dish that pairs well with almost anything! Tender Brussels sprouts are blanketed in a velvety cheesy cream sauce and then finished with a crispy, buttery breadcrumb topping. This luxurious casserole can even be made ahead of time, making it an ideal choice for holiday entertaining or family dinners.
Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Servings: 8

Equipment

  • Paring Knife
  • Saucepan (Large)
  • Nonstick Skillet (Deep)
  • Mixing Bowls (Stainless Steel)
  • Gratin Baking Dish (Oval)

Ingredients

  • Butter, oil or cooking spray, for the baking dish
  • 6 strips bacon, diced
  • 2 pounds Brussels sprouts, small to medium in size, outside leaves removed and stems trimmed, halved
  • Salt, to taste (approx. 2 tbsp for blanching water)
  • 1 tablespoon all-purpose flour
  • 2 cups heavy cream
  • 2 cups grated sharp white Cheddar cheese, or Gruyere, Fontina, or Brie
  • Freshly ground black pepper, to taste
  • Pinch cayenne pepper, (optional, for a subtle kick)
  • 2 slices butter-flavored bread, such as brioche, coarsely ground into fresh breadcrumbs
  • 2 tablespoons salted butter, softened (or unsalted butter with a pinch of salt added)
  • 1/4 cup freshly grated Parmesan cheese

Instructions

  • Preheat oven to 400°F (200°C). Lightly butter, oil, or spray an oval gratin-style baking dish large enough to accommodate all the Brussels sprouts. Set it aside.
  • Prepare an ice bath. In a large, deep skillet or saucepan, bring generously salted water to a rolling boil (approx. 2 tablespoons of salt for seasoning the sprouts).
  • Carefully drop the halved Brussels sprouts into the boiling water. Cook for 3-4 minutes, or until nearly tender but still firm to the bite (al dente) and bright green. Drain immediately and transfer to the ice bath to cool rapidly. Once cooled, drain again thoroughly and blot dry with paper towels or a clean kitchen towel.
  • In the same deep skillet or sauté pan, cook the diced bacon over medium heat until crispy. Remove the bacon bits with a slotted spoon and drain on a paper towel-lined plate. Reserve the bacon drippings in the pan.
  • Whisk the all-purpose flour into the reserved bacon drippings in the pan. Cook over low heat for 1-2 minutes, stirring constantly, to cook out the raw flour taste and form a roux.
  • Gradually stir in the heavy cream and bring to a gentle simmer over medium-low heat. Cook for 2-3 minutes, stirring occasionally, until the sauce begins to thicken.
  • Remove the pan from the heat. Add the shredded cheese gradually, whisking after each addition until all the cheese has melted and the sauce is smooth and creamy. Season with salt and freshly ground black pepper to taste. Add a pinch of cayenne pepper if desired for a subtle warmth.
  • Stir the blanched Brussels sprouts and crispy bacon into the cheese sauce, ensuring everything is well coated. The sauce will naturally thicken further as it cools with the sprouts.
  • Transfer the Brussels sprouts mixture into the prepared baking dish, spreading it evenly.
  • In a small bowl, combine the softened butter, coarsely ground breadcrumbs, and freshly grated Parmesan cheese. Mix with your hands until the butter is evenly distributed and the breadcrumbs are moist.
  • Scatter the breadcrumb topping generously and evenly over the top of the Brussels sprouts.
  • Bake for 20-25 minutes, or until the gratin is bubbly around the edges and the breadcrumb topping is golden brown and crispy. If the topping browns too quickly, loosely cover the dish with aluminum foil around the 15-minute mark. Serve immediately and enjoy!

Notes

SUBSTITUTIONS:

  • Suitable substitutes for sharp white Cheddar cheese include Gruyere, Fontina, or Brie cheese (ensure rind is removed).
  • If using turkey or soy bacon, you may need to add a small amount of butter (1-2 tablespoons) to the pan when making the roux if there aren’t enough drippings.

TIPS FOR PERFECTION:

  • Allow shredded cheese to reach room temperature before adding it to the sauce for easier, smoother melting.
  • For the best, crispiest topping, use fresh breadcrumbs. Buttery breads like brioche work exceptionally well. Simply tear bread slices, pulse in a food processor until coarsely ground.
  • Blanching the Brussels sprouts followed by an ice bath ensures they are tender-crisp and retain their vibrant green color.

MAKE AHEAD INSTRUCTIONS:

  • The gratin (sprouts, bacon, and cheese sauce) can be assembled up to two days in advance and stored covered in the refrigerator.
  • Before baking, let the casserole stand at room temperature for 30 minutes. Add the breadcrumb topping just before baking. You may need to increase the baking time by 5-10 minutes if baking from a colder temperature.

Nutrition Information (Estimated Per Serving)

Serving: 1Calories: 451 kcalCarbohydrates: 17gProtein: 14gFat: 38gSaturated Fat: 23gPolyunsaturated Fat: 2gMonounsaturated Fat: 9gTrans Fat: 0.1gCholesterol: 121mgSodium: 343mgPotassium: 524mgFiber: 4gSugar: 4gVitamin A: 2200 IUVitamin C: 97 mgCalcium: 330 mgIron: 2 mg

Nutritional values are automatically calculated using unbranded products and are estimates only. Actual results may vary based on ingredients used and portion sizes. Adjust as needed for dietary restrictions, allergies, or health concerns.

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