Name: Cheesy Bacon Brussels Sprouts Casserole Recipe
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Cuisine: American
Ingredients: 2 pounds Brussels sprouts, halved; 8 strips bacon, diced small; 2 cups heavy cream; 4 ounces white cheddar cheese, grated; 4 ounces gruyere cheese, grated; ½ cup parmigiano Reggiano, grated; 2 tablespoons butter, unsalted and melted; 1 ½ tablespoons all-purpose flour; ½ teaspoon ground black pepper; ½ cup panko breadcrumbs; 2 tablespoons salt for boiling

Jump to Recipe· 4.3 from 11 reviews

If you love Brussels sprouts but want to take them from simple side dish to show-stopping centerpiece, this Cheesy Bacon Brussels Sprouts Casserole Recipe is going to become your new best friend. Imagine tender halved Brussels sprouts wrapped in a luscious creamy cheese sauce, crispy bits of bacon folded throughout, and a golden, buttery panko topping that adds the perfect crunch. This casserole has all the comforting layers of flavor and texture you crave, making it a fantastic crowd-pleaser any time you want to impress without spending hours in the kitchen.

Ingredients You'll Need

A black pot filled with fresh green Brussels sprouts, some whole and some cut in halves showing pale green and cream inner layers, placed on a white marbled surface. The pot has two shiny metal handles, one on each side, and the Brussels sprouts are tightly packed, covering the entire pot interior. Photo taken with an iphone --ar 4:5 --v 7

Gathering your ingredients is a breeze, yet each plays a crucial role in creating the rich, balanced taste and appealing texture of this dish. From the earthy Brussels sprouts to the luxurious cheeses and crispy bacon, every element shines individually and harmonizes magnificently together.

2 tablespoons salt for boiling: Enhances the flavor of the Brussels sprouts as they cook and helps maintain their vibrant green color.
2 pounds Brussels sprouts, halved: The star of the dish, providing a slightly nutty, fresh crunch that pairs beautifully with creamy cheese.
8 strips bacon, diced small: Adds irresistible smoky, salty crispness that elevates the casserole’s flavor profile.
1 ½ tablespoons all-purpose flour: The thickening agent that helps create a smooth and creamy cheese sauce.
2 cups heavy cream: Supplies the rich base for the velvety cheese sauce that coats every bite.
4 ounces white cheddar cheese, grated: Brings sharp, tangy flavor and creaminess that melts perfectly into the sauce.
4 ounces gruyere cheese, grated: Offers a slightly nutty, mellow depth that complements the cheddar beautifully.
½ teaspoon ground black pepper: Adds just enough subtle kick to balance the richness.
½ cup panko breadcrumbs: Creates a delightfully crispy topping that contrasts the creamy filling.
½ cup Parmigiano Reggiano, grated: Infuses the crust with a savory, nutty umami flavor and encourages golden browning.
2 tablespoons unsalted butter, melted: Helps bind the breadcrumb topping and adds richness and color when baked.

How to Make Cheesy Bacon Brussels Sprouts Casserole Recipe

Step 1: Prepare the Brussels Sprouts

Start by preheating your oven to 400 degrees Fahrenheit and greasing your casserole dish with nonstick spray to ensure easy serving later. Set up an ice bath in a large bowl—this will be key to stopping the cooking process and keeping the sprouts bright green. Boil salted water, then steam your halved Brussels sprouts for about four minutes until just tender but still slightly crisp. Quickly transfer them to the ice bath to chill, then lightly dry with paper towels to avoid watery casserole.

Step 2: Cook the Bacon

While the sprouts cool, cook your diced bacon over medium-high heat until it’s beautifully crispy and golden. Use a slotted spoon to remove the bacon bits and place them on paper towels to drain excess fat. Don’t discard the bacon drippings in the pan; they will add amazing flavor to your cheese sauce.

Step 3: Make the Cheese Sauce

In the same pan with that wonderful bacon fat, whisk in the all-purpose flour to create a roux and cook it for two minutes, stirring constantly to remove the raw flour taste. Lower the heat to medium and gradually whisk in the heavy cream, keeping a gentle simmer to cook the sauce until it thickens, about 4 to 5 minutes.

Slowly sprinkle in your grated white cheddar and gruyere cheese while whisking constantly to create a silky, smooth sauce without lumps. Add the ground black pepper, mix again, then remove from heat. This sauce will coat your Brussels sprouts and bacon, making the whole casserole irresistibly creamy.

Step 4: Assemble and Bake

Gently fold the blanched Brussels sprouts and crispy bacon into your warm cheese sauce until everything is evenly coated. Transfer this luscious mixture into your prepared casserole dish. In a small bowl, combine the panko breadcrumbs with grated Parmigiano Reggiano and then drizzle in the melted butter, stirring until the crumbs are well coated. Sprinkle this topping evenly over the casserole and bake for about 15 minutes, or until the top turns golden brown and you see bubbling at the edges. If you notice the breadcrumbs browning too fast, simply tent the dish with foil to prevent burning.

How to Serve Cheesy Bacon Brussels Sprouts Casserole Recipe

A close-up of a white oval baking dish filled with three layers: the bottom layer of green Brussels sprouts, the middle layer of creamy white sauce with small chunks of soft meat, and the top layer of golden brown crunchy breadcrumbs scattered unevenly with some darker toasted spots. A wooden spoon holds a scoop showing all three layers clearly with the Brussels sprouts peeking from underneath the creamy sauce and crumb topping. The background features a white marbled texture. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

A quick sprinkle of finely chopped fresh parsley or chives adds a vibrant pop of color and freshness that contrasts the rich, creamy casserole. You can also add a light dusting of extra Parmigiano Reggiano on top right after baking for a sharp, salty finish that guests will love.

Side Dishes

This Cheesy Bacon Brussels Sprouts Casserole Recipe pairs wonderfully with simple roasted chicken or even a juicy steak, since its richness needs a protein partner to balance the flavors. For something lighter, try serving alongside a crisp green salad with a lemon vinaigrette — the acidity cuts through the creamy cheese perfectly.

Creative Ways to Present

Consider serving the casserole in individual ramekins to impress guests at your next dinner party or holiday meal. Layer it in a clear glass dish so the beautiful colors and textures peek through the sides. Garnishing with extra crispy bacon bits on top just before serving adds both crunch and a gorgeous presentation touch.

Make Ahead and Storage

Storing Leftovers

Allow your casserole to cool to room temperature, then cover tightly and refrigerate for up to 3 days. It reheats beautifully in the oven or microwave, making it a perfect anytime comfort food ready to enjoy.

Freezing

If you want to prep ahead or save leftovers, you can freeze the casserole before baking. Assemble it as instructed, cover the dish tightly with foil and plastic wrap, and freeze for up to 2 months. Thaw overnight in the refrigerator before baking to ensure it cooks evenly.

Reheating

Reheat leftover casserole in a 350 degree Fahrenheit oven until warmed through — usually about 20 minutes. This method keeps the topping crisp and the cheese sauce creamy. For a quicker option, the microwave works but the topping won’t stay as crunchy.

FAQs

Can I use frozen Brussels sprouts in this recipe?

While fresh Brussels sprouts provide the best texture and flavor, you can use frozen if needed. Just thaw and drain them well before cooking to avoid excess moisture that could make the casserole soggy.

What can I substitute for heavy cream?

If you want to lighten the dish, half-and-half or whole milk can be used, but the sauce won’t be quite as rich or thick. For dairy-free options, coconut cream is a good substitute, though it will change the flavor profile slightly.

How can I make this recipe vegetarian?

Simply omit the bacon and add sautéed mushrooms or caramelized onions to introduce a savory, umami flavor that complements the cheesy sauce beautifully.

Is it possible to make this casserole gluten-free?

Yes! Swap the all-purpose flour for a gluten-free flour blend and replace the regular panko with gluten-free breadcrumbs. The rest of the ingredients are naturally gluten-free.

Can I prepare this casserole in advance and bake it later?

Definitely. Assemble the casserole and refrigerate it, covered, for up to 24 hours before baking. This can actually help deepen the flavors. Just add a few extra minutes to the baking time if baking straight from the fridge.

Final Thoughts

Trust me, once you try this Cheesy Bacon Brussels Sprouts Casserole Recipe, it will be your go-to for holidays, weeknight dinners, or whenever you want a comforting, crowd-pleasing side that feels both elegant and homey. The blend of creamy cheese, smoky bacon, and tender Brussels sprouts makes it an absolute delight that everyone will ask for again and again. So go ahead and make it — your taste buds will thank you!