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Cheesy Keto Cauliflower Au Gratin Recipe

Cheesy Keto Cauliflower Au Gratin Recipe

4.8 from 12 reviews

This Cheesy Keto Cauliflower Au Gratin is a creamy, rich, and low-carb twist on the classic French dish. Featuring tender cauliflower slices baked in a luscious blend of Swiss Gruyere cheese and heavy cream, this recipe creates an indulgent, keto-friendly side that’s perfect for low-carb and ketogenic diets. With layers of cheese and a golden crust, it’s an easy-to-make comfort food that pairs well with a variety of main courses.

Ingredients

Scale

Cauliflower

  • 1 head cauliflower (about 4 cups), sliced into thin slices

Cheese

  • 2 cups Swiss Gruyere cheese, shredded (can substitute with Swiss cheese or sharp cheddar)

Vegetables

  • 4 green onions, sliced

Dairy

  • 1 ½ cups heavy cream (can reduce to 1 cup if a less soupy consistency is preferred)

Seasonings

  • Salt, to taste
  • Black pepper, to taste

Other

  • Cooking spray for greasing the baking dish

Instructions

  1. Preheat Oven and Prepare Dish: Preheat your oven to 375°F (190°C) and lightly grease your baking dish with cooking spray to prevent sticking.
  2. Slice Cauliflower: Cut the cauliflower into thin slices to ensure even cooking. Arrange half of the cauliflower slices in an even layer at the bottom of your prepared baking dish—this should take about two layers.
  3. Add Cheese and Green Onions: Sprinkle half of the shredded Gruyere cheese evenly over the layered cauliflower. Then, scatter all of the sliced green onions on top of the cheese. Season lightly with salt and black pepper to enhance the flavors.
  4. Layer Remaining Cauliflower: Place the remaining cauliflower slices evenly over the cheese and onions, creating another even layer.
  5. Add Cream and Top with Cheese: Pour the heavy cream uniformly over the entire layered casserole. Finally, top the dish with the remaining shredded Gruyere cheese to create a golden crust during baking.
  6. Bake Covered: Cover the dish tightly with aluminum foil and bake in the preheated oven for 30 minutes to allow the cauliflower to cook gently and flavors to meld.
  7. Uncover and Finish Baking: Remove the foil and continue baking uncovered for an additional 40 minutes, or until the cauliflower is fork-tender and the cheese on top is bubbling and golden-brown. Check periodically as oven times may vary.
  8. Rest Before Serving: Let the au gratin rest for 5 minutes after baking. This helps the sauce thicken and settle for perfect serving consistency. Store any leftovers in an airtight container in the refrigerator.

Notes

  • Nutrition per serving: approximately 280 calories, 24g fat, 3.6g total carbs, 1.8g fiber (net carbs 1.8g), 9.4g protein.
  • Swiss Gruyere cheese provides a creamy, nutty flavor, but you can substitute with Swiss or sharp cheddar cheese if preferred.
  • If you prefer a less saucy consistency, reduce heavy cream to 1 cup; the dish will still be delicious.
  • Ensure slices of cauliflower are thin for even cooking and the best texture.
  • Store leftovers in an airtight container in the refrigerator for up to 3 days and reheat gently to maintain creaminess.

Nutrition

Keywords: keto cauliflower au gratin, cheesy cauliflower bake, low carb side dish, ketogenic recipes, cauliflower cheese casserole, keto comfort food