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roasted brussels sprouts with melted cheese in baking dish
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5 from 1 vote

Printable Brussels Sprouts au Gratin Recipe Card

Roasted brussels sprouts are baked in a cheesy sauce for this delicious low-carb side dish. 
Prep Time10 minutes
Cook Time40 minutes
Total Time50 minutes
Course: Side Dish
Cuisine: American
Keyword: brussels sprouts au gratin, brussels sprouts recipe, keto-friendly
Servings: 6

Ingredients

  • 1 ½ lbs Brussels sprouts, halved
  • 3 cloves garlic, minced
  • 2 tbsp olive oil
  • ¾ cup heavy cream
  • 1 cup sharp cheddar cheese, grated
  • 1 cup parmesan cheese, grated
  • 1 tsp garlic powder minced
  • ¼ tsp nutmeg
  • salt and pepper, to taste

Instructions

  • Preheat the oven to 400℉. Grease a 3-quart baking dish and set aside. 
  • Remove the stems and any yellow outer leaves of the Brussels sprouts. Cut the sprouts in half or any extra large sprouts into quarters.
  • In a large mixing bowl, toss the Brussels sprouts with olive oil, minced garlic, salt, and pepper. Spread the Brussels sprouts on a baking sheet and roast in the preheated oven for about 15 minutes until they start to caramelize and can easily be pierced with a fork with a just a bit of resistance.
  • Remove them from the baking sheet and put them back in the large mixing bowl. Add the heavy cream, ½ cup of cheddar cheese, ½ cup of parmesan cheese, garlic powder, and nutmeg. Season with salt and pepper. Stir well to combine.  
  • Pour the mixture into the 3-quart baking dish. Top with the remaining ½ cup of parmesan and cheddar cheeses. Bake at 400℉ for about 25 minutes until it is bubbly and the cheese is starting to brown. 

Notes

  • You can substitute the cheddar cheese with the cheese of your preference. Other good options would be gruyere or swiss.
  • If the casserole is starting to brown too early, cover it with aluminum foil to finish baking.