Brussels Sprouts Au Gratin is a hard side dish to resist. Brussels sprouts are baked in a creamy cheesy sauce with crispy bacon.
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5 from 1 vote

Brussels Sprout Au Gratin

Brussels Sprout Au Gratin are easy to make, and they reheat so well. 
Course Side Dish
Cuisine American
Keyword Brussels Sprout Au Gratin
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Servings 8
Calories 218kcal
Author Stephanie Manley


  • 2 pounds Fresh Brussels sprouts that have been washed, trimmed, and cut in half
  • 3 tablespoons of butter
  • 3 tablespoons of flour
  • 2 1/2 cups whole milk
  • 1/2 teaspoon salt
  • 1/2 teaspoon ground black pepper
  • 1 cup Gruyere cheese
  • 1/2 cup diced cooked bacon


  • Preheat an oven to 350 degrees. Wash, trim and cut Brussels sprouts in half. Place Brussels sprouts into a 9x13-inch baking dish.
  •  In a medium-size saucepan over medium heat add 3 tablespoons of butter. When the butter has melted add the flour. Whisk together the butter and flour and continue to cook for about 1 minute. The butter and flour mixture will become fragrant like pie dough. Slowly add in the milk and continue to whisk. The sauce will thicken. When all of the milk has been incorporated into the sauce continue to stir and cook until the sauce thickens. Season with salt and pepper. Slowly add in the cheese and stir to incorporate the cheese into the sauce. Cook until the cheese has fully melted. 
  • Pour cheese sauce over the Brussels sprouts, and then top with the crispy cooked bacon. Bake in the oven for about 45 minutes.


Calories: 218kcal | Carbohydrates: 16g | Protein: 11g | Fat: 13g | Saturated Fat: 7g | Cholesterol: 38mg | Sodium: 311mg | Potassium: 555mg | Fiber: 4g | Sugar: 6g | Vitamin A: 1265IU | Vitamin C: 96.4mg | Calcium: 302mg | Iron: 1.8mg
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