Irresistible Cheesy Brussel Sprout Casserole Perfect for Any Occasion

If you’re searching for the ultimate comfort food side dish, this Cheesy Brussel Sprout Casserole is exactly what you need. Tender brussel sprouts are coated in a rich, creamy cheese sauce and baked until golden and bubbly, creating a dish that’s both cozy and irresistible.

Perfect for holiday dinners, family gatherings, potlucks, or weeknight meals, this casserole transforms simple ingredients into a crowd-pleasing favorite. If you enjoy hearty vegetable dishes, you might also love these Honey Garlic Brussel Sprouts for another delicious way to enjoy brussel sprouts.

Save

Why You’ll Love Cheesy Brussel Sprout Casserole

This casserole combines creamy textures with rich cheese flavor and tender vegetables, making it a comforting dish that even picky eaters often enjoy.

The golden cheesy topping creates an irresistible crust that perfectly complements the creamy interior. If you enjoy cozy baked dishes, you might also appreciate this Creamy Cabbage Carbonara for another comforting meal.

Who This Recipe Is For

This recipe is perfect for families, holiday hosts, and anyone looking for a vegetable side dish that feels indulgent and satisfying.

Whether you’re serving a special dinner or simply upgrading your weeknight menu, this casserole is guaranteed to impress. If you enjoy classic comfort food, you may also like this Margherita Focaccia Bread as a delicious side.

Ingredients You’ll Need

For the Casserole:

• 700 g brussel sprouts, trimmed and halved
• 2 tablespoons (30 ml) olive oil
• 1 teaspoon salt
• 1/2 teaspoon black pepper

For the Cheese Sauce:

• 2 tablespoons (28 g) unsalted butter
• 2 tablespoons (16 g) all-purpose flour
• 1 1/2 cups (360 ml) whole milk
• 1/2 cup (120 ml) heavy cream
• 1 teaspoon garlic powder
• 1/2 teaspoon onion powder
• 1 1/2 cups (150 g) shredded cheddar cheese
• 1/2 cup (50 g) grated parmesan cheese
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper

For the Topping:

• 1/2 cup (50 g) shredded cheddar cheese
• 1/4 cup (25 g) grated parmesan cheese
• 1/2 cup (50 g) breadcrumbs

Ingredient Notes and Variations

Fresh brussel sprouts provide the best texture and flavor. Roasting them before baking helps reduce bitterness and adds extra depth.

Sharp cheddar creates a bold cheesy flavor, while parmesan adds richness and a slightly nutty finish. If you enjoy creamy side dishes, you might also love this Creamy Feta & Green Olive Spread as an appetizer before dinner.

Kitchen Equipment You’ll Need

• Large baking sheet
• 9×13-inch casserole dish
• Medium saucepan
• Whisk
• Mixing bowls
• Measuring cups and spoons
• Wooden spoon

Save

Step-by-Step Preparation: How to Make Cheesy Brussel Sprout Casserole

Step 1: Preheat your oven to 220°C (425°F). Line a baking sheet with parchment paper.

Step 2: Toss the halved brussel sprouts with olive oil, salt, and pepper. Spread them evenly on the baking sheet.

Step 3: Roast for 15–20 minutes until lightly caramelized and tender.

Step 4: While the sprouts roast, melt butter in a saucepan over medium heat.

Step 5: Whisk in the flour and cook for 1 minute until smooth.

Step 6: Slowly pour in the milk and cream, whisking continuously until the mixture thickens.

Step 7: Stir in garlic powder, onion powder, cheddar cheese, parmesan cheese, salt, and pepper until smooth.

Step 8: Transfer the roasted brussel sprouts to a casserole dish and pour the cheese sauce over them.

Step 9: Sprinkle the remaining cheddar cheese, parmesan cheese, and breadcrumbs over the top.

Step 10: Bake for 20–25 minutes until golden, bubbly, and lightly crisp on top.

Pro Tips for the Best Cheesy Brussel Sprout Casserole

Roasting the brussel sprouts before baking prevents excess moisture and adds a richer flavor.

Using freshly grated cheese instead of pre-shredded varieties helps create a smoother, creamier sauce.

Allow the casserole to rest for 5–10 minutes before serving so the sauce can set slightly.

Common Mistakes to Avoid

One common mistake is skipping the roasting step, which can leave the brussel sprouts watery.

Another is overheating the cheese sauce, which may cause the cheese to separate instead of remaining smooth.

Using too many breadcrumbs can overwhelm the creamy texture of the casserole.

Serving Suggestions

This casserole pairs beautifully with roasted proteins, baked dishes, and holiday meals.

For a complete dinner spread, serve it alongside 25-Minute Garlic Roasted Radishes and Lemon Herb Quinoa with Garbanzo Beans.

Creative Presentation Ideas

Serve the casserole directly from a rustic baking dish for a cozy family-style presentation.

Garnish with chopped fresh parsley or chives for a pop of color.

A light sprinkle of extra parmesan just before serving adds an elegant finishing touch.

Flavor Variations and Add-Ins

You can customize this casserole in many ways:

• Add sautéed mushrooms for extra richness.
• Stir in caramelized onions for sweetness.
• Include crushed red pepper flakes for gentle heat.
• Mix in spinach for added greens.
• Top with toasted nuts for extra crunch.

For more comforting recipes, try Creamy Red Pepper Pasta.

How to Store and Reheat

Store leftover casserole in an airtight container in the refrigerator for up to 4 days.

To reheat, place portions in the oven at 175°C (350°F) until warmed through. You can also microwave individual servings.

Make-Ahead Tips

This casserole is ideal for preparing ahead of time.

You can assemble the entire dish up to 24 hours before baking and store it covered in the refrigerator.

When ready to serve, simply bake as directed, adding a few extra minutes if baking directly from cold.

Save

Frequently Asked Questions

Can I use frozen brussel sprouts?

Yes, but fresh brussel sprouts provide the best texture. If using frozen, thaw and drain thoroughly before roasting.

Can I make this casserole ahead of time?

Absolutely. Assemble it a day ahead and refrigerate until ready to bake.

What cheese works best?

Sharp cheddar and parmesan provide excellent flavor, but mozzarella, Gruyère, or Monterey Jack can also be used.

Can I freeze the casserole?

Yes. Freeze after assembling or after baking. Thaw overnight before reheating.

Final Thoughts: Why Cheesy Brussel Sprout Casserole Is a Keeper

This Cheesy Brussel Sprout Casserole delivers everything you want in a comfort food side dish: creamy texture, rich cheese flavor, tender vegetables, and a crispy golden topping. It’s easy enough for weeknight dinners and impressive enough for holiday celebrations, making it a recipe you’ll return to again and again.

Call to Action – Share and Subscribe

If you loved this Cheesy Brussel Sprout Casserole, share it with friends and family and save it for your next gathering. Subscribe for more comforting recipes, creative side dishes, and delicious family-friendly meals.

Print