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A baking dish filled with cauliflower cheese and bacon ready to be served.
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Easy Keto Cauliflower au Gratin Recipe with Heavy Cream

Cheesy, creamy and delicious, this cauliflower au gratin is topped with crispy bacon and sweet onions. Made without flour, my healthy version uses a white sauce made with heavy cream to save on the carbs! Babies, kids and adults are guaranteed to love this recipe.
Course Dinner
Cuisine American, French
Keyword cauliflower stuffing, keto casserole
Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Servings 6 servings
Calories 522kcal
Author Mira

Equipment

  • Steamer
  • Baking Dish
  • Frying Pan

Ingredients

  • 1 large cauliflower or 2 small heads
  • ½ onion
  • 1 tbsp butter
  • 4 slices bacon
  • 3 tbsp cream cheese room temperature
  • 1 ¾ cup heavy cream
  • ½ tsp black pepper
  • ½ tsp salt
  • ¼ tsp nutmeg
  • ½ cup emmental cheese (this is for the cheese sauce) or gouda, swiss, gruyere, cheddar, mozzarella, etc.
  • ½ cup emmental cheese (this is for the topping)

Instructions

  • Slice the cauliflower head into slices. Place in a steamer and steam for 15 minutes. You can also oven roast the cauliflower for 30-40 minutes at 180C/350F. I don't suggest boiling the cauliflower as it gets too watery.
  • While the cauliflower is steaming, let's prepare the sauce and toppings.
    Thinly slice the onion and bacon slices. Place in a frying pan with the butter and fry until the onions and golden and the bacon is crispy. Set aside. Use the same pan for the white sauce.
  • Add the room temperature cream cheese to the frying pan and break into smaller pieces with a spatula so that it's easier to melt. Put the heat on medium and let the cream cheese melt while stirring.
  • Add the heavy cream a little at a time and whisk it in the cream cheese. Keep on whisking until there are no more cheese bumps from the cream cheese.
  • Add the pepper, salt, nutmeg and emmental and whisk everything together until the cheese has melted. Turn off the heat.
  • Preheat the oven to 200C/400F. In a deep baking dish add the steamed cauliflower, top with half of the bacon and onions, pour the white sauce all over, top with the rest of the bacon and onion and then sprinkle the emmental cheese all over.
  • Place in the oven and bake for 15 minutes, just until the top cheese has melted. Take out of the oven, let it cool 10 minutes before serving!

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