Cheesy Keto Cauliflower Au Gratin Casserole Recipe
This Cheesy Keto Cauliflower Au Gratin Casserole is a low-carb, creamy, and cheesy side dish perfect for keto and low-carb diets. Tender cauliflower slices are layered with Swiss Gruyere cheese, fresh green onions, and rich heavy cream, then baked until golden and bubbly for a deliciously comforting dish.
- Prep Time: 15 minutes
- Cook Time: 1 hour 10 minutes
- Total Time: 1 hour 25 minutes
- Yield: 6 servings 1x
- Category: Side Dish
- Method: Baking
- Cuisine: American
- Diet: Low Carb
Ingredients
Scale
Vegetables
- 1 head cauliflower (or 4 cups), cut in slices
- 4 green onions, sliced
Dairy
- 2 cups Swiss Gruyere cheese, shredded (can also use just Swiss cheese)
- 1 1/2 cups heavy cream
Seasonings
- Salt, to taste
- Black pepper, to taste
Instructions
- Preheat and Prepare Baking Dish: Preheat your oven to 375°F (190°C). Lightly spray a baking dish with cooking spray to prevent sticking and set it aside.
- Slice Cauliflower: Thinly slice the cauliflower into rounds. You’ll need enough to create two even layers in your baking dish.
- Layer First Half of Cauliflower: Place half of the cauliflower slices in an even layer in the prepared baking dish.
- Add Cheese and Green Onions: Sprinkle half of the shredded Gruyere cheese evenly over the cauliflower. Then, sprinkle all the sliced green onions evenly on top. Season lightly with salt and black pepper to taste.
- Layer Remaining Cauliflower: Add the remaining cauliflower slices evenly over the cheese and onions layer.
- Add Cream and Remaining Cheese: Pour the heavy cream evenly over the layered cauliflower. Then, sprinkle the remaining shredded cheese evenly on top. Cover the dish with foil tightly.
- Bake Covered: Place the covered casserole in the preheated oven and bake for 30 minutes to let the cauliflower cook gently and the cheese melt.
- Bake Uncovered Until Golden: Remove the foil and continue baking for 40 more minutes, or until the cauliflower is fork-tender and the top cheese is beautifully golden brown. Keep an eye on it as baking times may vary depending on your oven.
- Rest Before Serving: Let the casserole sit for 5 minutes after baking to thicken and set slightly for easier serving.
- Store Leftovers: Any leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days.
Notes
- You can substitute Swiss Gruyere cheese with just Swiss cheese if preferred.
- For extra flavor, consider adding a pinch of nutmeg to the cream before pouring.
- Ensure cauliflower is sliced evenly for uniform cooking.
- Covering with foil initially helps cook the cauliflower through without drying out the cheese topping.
- Allow the casserole to rest before serving so it firms up and slices nicely.
- Store leftovers refrigerated and reheat covered to retain moisture.
Keywords: keto casserole, cauliflower au gratin, low carb side dish, cheesy cauliflower bake, keto dinner side, gluten free, keto comfort food
