Savory Brussels Sprouts Casserole Recipe

Savory Brussels Sprouts Casserole Recipe

The moment the oven door opens, the sweet‑nutty aroma of roasted Brussels sprouts casserole fills the kitchen, promising cozy comfort.

I first made this on a chilly November evening in my grandma’s farmhouse kitchen, watching the butter melt over fresh sprouts and a sprinkle of grated cheddar.

When the cheese turned golden and the edges crisped, I knew this would become a family favorite. This Brussels Sprouts Casserole quickly became a cherished family favorite.

Why You’ll Love This Brussels Sprouts Casserelle

  • Bright green heads turn caramel‑brown, creating a beautiful contrast.
  • Nutty, buttery flavor with a hint of toasted cheese.
  • Ready in just 45 minutes, perfect for weeknights.
  • Foolproof – just toss, bake, and enjoy.
  • Ideal for holiday gatherings or cozy family dinners.

Ingredients You’ll Need

  • 1 1/2 lbs Brussels sprouts, trimmed and halved
  • 2 tbsp olive oil
  • 1/2 cup chopped onion
  • 2 cloves garlic, minced
  • 1/4 cup grated Parmesan cheese
  • 1/4 cup breadcrumbs
  • 1 tsp dried thyme
  • 1/2 tsp salt
  • 1/4 tsp black pepper
  • 1/4 cup milk

The fresh Brussels sprouts bring a crisp bite, while the creamy cheese sauce binds everything in a velvety hug.

Expert Tips for the Best Brussels Sprouts Casserole

  • Halve the sprouts and toss with olive oil – this ensures even caramelization.
  • Avoid overcrowding the pan; crowded sprouts steam instead of roast.
  • Add a splash of dry white wine to the sauce for depth.
  • Look for a bubbling edge and golden top as doneness cues.
  • Prepare the casserole a day ahead and refrigerate; bake fresh for best texture.

Variations and Substitutions

Swap the cheese for dairy‑free shreds for a vegan version, add cooked bacon for a smoky protein boost, or stir in a spoonful of Dijon mustard for a bold tang.

How to Store and Reheat

Cool to room temperature, then store in an airtight container in the fridge for up to 4 days. Reheat covered at 350°F for 20 minutes, then uncover to crisp the top. Freeze individual portions for up to 2 months and bake from frozen, adding 10 minutes.

Frequently Asked Questions

Can I use frozen Brussels sprouts?

Yes, thaw and pat them dry first; this prevents excess moisture and keeps the casserole crisp.

What cheese works best?

A blend of sharp cheddar and Gruyère gives both melt and flavor; feel free to experiment with mozzarella for stretch.

Can I make this casserole gluten‑free?

Absolutely – use gluten‑free flour or cornstarch for the sauce and ensure your breadcrumbs are gluten‑free.

I can’t wait for you to try this cozy dish; it’s perfect for sharing love around the table. Happy cooking!

✦ Recipe Card ✦

Brussels Sprouts Casserole

⏱️
PREP
15 mins
🔥
COOK
35 mins
TOTAL
50 mins
👤
SERVES
4 servings
🔥 Calories 280 kcal💪 Protein 12g🌾 Carbs 28g🫙 Fat 9g
 

🧂 Ingredients

1 1/2 lbs Brussels sprouts, trimmed and halved
2 tbsp olive oil
1/2 cup chopped onion
2 cloves garlic, minced
1/4 cup grated Parmesan cheese
1/4 cup breadcrumbs
1 tsp dried thyme
1/2 tsp salt
1/4 tsp black pepper
1/4 cup milk
 

👩‍🍳 Instructions

  1. 1Preheat oven to 375°F (190°C).
  2. 2In a large skillet, heat olive oil over medium heat. Add onions and cook until translucent, about 3 minutes. Add garlic and cook for 1 minute more.
  3. 3Add Brussels sprouts to the skillet, season with salt, pepper, and thyme, and sauté until they begin to brown, about 5-7 minutes. Stir in milk and cook until the liquid has mostly evaporated. Remove from heat.
  4. 4Transfer the Brussels sprouts to a greased baking dish. Sprinkle grated Parmesan and breadcrumbs evenly over the top.
  5. 5Bake in the preheated oven for 20-25 minutes, or until the topping is golden brown and the sprouts are tender. Remove from oven and let cool slightly before serving.
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