Garlicky Creamy Brussels Sprouts Au Gratin

If you’re looking for a side dish that steals the spotlight, this Garlicky Creamy Brussels Sprouts Au Gratin is it. Tender Brussels sprouts are baked in a rich, velvety cream sauce and layered with a trio of melty cheeses for the ultimate comfort food experience. It’s the kind of dish that turns even Brussels sprouts skeptics into believers. Perfect for Thanksgiving, holiday dinners, or cozy weeknight meals, this au gratin delivers a golden, bubbling top with irresistibly creamy, garlicky flavor in every bite.

Why You’ll Love This Recipe

• Ultra creamy and cheesy with a golden baked top
• Ready in just 30 minutes for an easy yet impressive side
• A perfect way to make Brussels sprouts taste indulgent
• Great for holidays, family dinners, or special occasions
• Made in one pan for minimal cleanup

Ingredients

• Brussels sprouts (16 oz, trimmed and halved): The hearty base that becomes tender and slightly caramelized when baked
• Butter (2 tbsp): Adds richness and helps infuse garlic flavor
• Garlic (3 cloves, minced): Provides bold, aromatic depth
• Heavy cream (½ cup): Creates a luscious, creamy sauce
• Kosher salt (½ tsp): Enhances all the flavors
• Black pepper (¼ tsp): Adds mild heat and balance
• Garlic powder (¼ tsp): Boosts savory garlic flavor
• Nutmeg (⅛ tsp): Adds subtle warmth and complexity
• Parmesan cheese (½ cup, shredded): Brings salty, nutty depth
• Cheddar cheese (1 cup, shredded): Adds sharpness and meltiness
• Fontina cheese (1 cup, shredded): Provides a smooth, creamy melt

How to Make Garlicky Creamy Brussels Sprouts Au Gratin

1. Preheat and Prep

Preheat your oven to 375°F (190°C). Clean and trim the Brussels sprouts, then cut them in half. Shred all cheeses and combine them in a bowl so they’re ready to use.

2. Infuse the Garlic Butter

Heat an oven-safe skillet or braiser over medium heat and melt the butter. Add the minced garlic and let it gently cook until fragrant, being careful not to let it brown. This step builds a rich, aromatic base for the sauce.

3. Build the Cream Sauce

Remove the pan from heat and stir in the heavy cream, kosher salt, black pepper, garlic powder, and nutmeg. Mix until smooth, then stir in half of the shredded cheese mixture until melted and creamy.

4. Add Brussels Sprouts

Add the halved Brussels sprouts to the skillet and toss them well in the creamy sauce. Spread them into an even layer so they cook evenly.

5. Bake Until Golden and Bubbly

Top with the remaining cheese and transfer the skillet to the oven. Bake for 18–25 minutes until the Brussels sprouts are tender and the cheese is melted, golden, and bubbling. Serve warm and enjoy immediately.

Tips for Success

• Don’t brown the garlic—it should be fragrant, not bitter
• Cut Brussels sprouts evenly for consistent cooking
• Use freshly shredded cheese for the smoothest melt
• Let the dish rest for a few minutes before serving for better texture
• For extra browning, broil for 1–2 minutes at the end

Equipment Needed

• Oven-safe skillet, cast iron pan, or braiser
• Mixing bowl
• Knife and cutting board
• Cheese grater
• Oven

Recipe Variations

• Bacon Version: Add crispy cooked bacon for smoky flavor
• Spicy Kick: Mix in red pepper flakes or a dash of cayenne
• Lighter Option: Swap heavy cream for half-and-half
• Vegetable Boost: Add cauliflower or broccoli for variety
• Extra Cheesy: Add mozzarella or Gruyère for even more meltiness

Serving Suggestions

Serve this Garlicky Creamy Brussels Sprouts Au Gratin alongside roasted chicken, turkey, steak, or baked fish. It’s especially perfect for holiday spreads with mashed potatoes, stuffing, and gravy. For a lighter meal, pair it with a crisp green salad or roasted vegetables.

FAQs

Can I make this ahead of time?
Yes, assemble it ahead and bake just before serving for best texture.

Can I use frozen Brussels sprouts?
Fresh is best, but frozen can work if thawed and well-drained.

How do I store leftovers?
Store in an airtight container in the refrigerator for up to 3 days.

Can I reheat it?
Yes, reheat in the oven at 350°F until warmed through for best texture.

Can I use different cheeses?
Absolutely, Gruyère, mozzarella, or provolone work well.

Final Thoughts

This Garlicky Creamy Brussels Sprouts Au Gratin is the ultimate comfort side dish—rich, cheesy, and full of bold garlic flavor. It transforms simple Brussels sprouts into something truly indulgent and memorable. Whether you’re serving it for a holiday feast or a cozy dinner at home, this recipe is guaranteed to impress and disappear fast from the table.

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