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–+ servings
A beautifully browned Brussels sprouts gratin in a glass baking dish, topped with a golden, crispy crumble. The gratin is garnished with finely chopped parsley, adding a touch of green to the dish.
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5 from 3 votes

Baked Brussel Sprouts Gratin 🥘

And that's not all! I top it all off with crunchy cauliflower crumbles infused with butter, spice, and fresh herbs for an extra layer of flavor and texture. Each bite is pure comfort food bliss, guaranteed to satisfy everyone around the table. This dish is the ultimate cozy addition to your holiday spread, bringing rich, amazing flavor that will have everyone coming back for seconds!
Prep Time15 minutes
Cook Time40 minutes
Total Time55 minutes
Course: Side Dish
Cuisine: American
Keyword: brussel sprouts cauliflower casserole, brussels sprouts au gratin, Brussels Sprouts Gratin, cauliflower and brussel sprout gratin, cauliflower brussel sprout gratin, gluten free brussel sprout recipe
Servings: 6 servings
Calories: 465kcal
Author: Scott Groth

Ingredients

Brussels Sprouts Gratin Ingredients List

For the Cauliflower Crumbles

  • 1.5 cups cauliflower shredded
  • 3 sprigs of thyme fresh, stems removed
  • 1 tablespoon butter
  • â…› teaspoon red pepper flakes optional, to taste

For the Baked Brussels Sprouts

  • 1.25 pounds brussels sprouts cleaned & sliced lengthwise
  • 1 cup heavy cream
  • ¾ cup gruyere cheese shredded
  • ¼ cup olive oil
  • 4 tablespoons butter divided
  • 3 cloves garlic minced
  • 3 slices bacon sliced into batons
  • 1 shallot finely diced
  • ½ teaspoon kosher salt
  • â…› teaspoon freshly ground black pepper

Instructions

Preparation Steps

    For Cauliflower Crumbles

    • Preheat your oven to 400°F (204°C).
    • Line a rimmed baking sheet with foil.
    • Combine shredded cauliflower, butter, thyme, and optional red pepper flakes on the prepared baking sheet. Season with a pinch of salt and a few grinds of black pepper.

    For Brussels Sprouts

    • Clean and slice the brussels sprouts lengthwise.
    • Finely dice the shallot.
    • Mince the garlic cloves.
    • Slice the bacon into batons.

    Cooking Instructions

      For Cauliflower Crumbles

      • Place the seasoned cauliflower in the oven for 5 minutes.
      • Open the oven and stir the mixture to ensure the cauliflower is spread thinly. Cook for another 5 minutes or until it starts to brown.
      • Remove from oven and set aside.

      For Brussels Sprouts

      • While the cauliflower is cooking, heat a large skillet over high heat.
      • Add 2 tablespoons of butter and the olive oil. Place the brussels sprouts cut side down in the skillet. Cook until caramelized, then transfer to a gratin dish.
      • In the same skillet, add the bacon and cook for 2-3 minutes.
      • Add the shallots and cook for another 2 minutes.
      • Reduce heat to medium-high and add the remaining butter and garlic. Stir well and cook for 1-2 minutes.
      • Add the cream, stir well, and cook for 2-3 minutes until slightly thickened.
      • Pour the cream mixture over the sprouts in the gratin dish. Top with grated cheese and cauliflower crumbles.
      • Bake in the oven at 400 degrees Fahrenheit for 5 minutes. Reduce heat to 350 degrees and bake for 15 minutes. Reduce heat again to 300 degrees and bake for 10 more minutes or until the topping is browned and the sauce is bubbling.

      Notes

      NOTE: The overall net carb count does not include the Substitute and Additional  Ingredients.
      If this Baked Brussels Sprouts recipe hits the spot for you, I'd love to hear about it! If you have any tips for making it even lower in carbs, please leave a comment below! Have a wonderful time cooking!

      Nutrition

      Serving: 1serving | Calories: 465kcal | Carbohydrates: 12g | Protein: 11g | Fat: 43g | Saturated Fat: 21g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 16g | Trans Fat: 0.4g | Cholesterol: 95mg | Sodium: 503mg | Potassium: 542mg | Fiber: 4g | Sugar: 4g | Vitamin A: 1784IU | Vitamin C: 94mg | Calcium: 248mg | Iron: 2mg
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