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Keto au gratin cauliflower topped with bacon in a square, white casserole dish.
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5 from 1 vote

Cauliflower Au Gratin

Keto Cauliflower Au Gratin is just as creamy and flavorful as Au Gratin Potatoes but with only 7 net carbs per serving. This low carb, gluten free side dish is the perfect comfort food to pair with all of your favorite meals.
Prep Time15 minutes
Cook Time1 hour
Total Time1 hour 15 minutes
Course: Side Dish
Cuisine: American, Gluten Free, Low Carb
Servings: 6 servings
Calories: 351kcal

Ingredients

  • 1 large head cauliflower (cut into slices about 1/4-inch thick)
  • 1 1/2 cups cheddar cheese (shredded)
  • 1 cups heavy cream
  • 6 cloves garlic (minced)
  • 1/2 teaspoon salt
  • 1/4 teaspoon pepper
  • 4 slices bacon (cooked and crumbled)

Instructions

  • Preheat oven to 350° F.
  • Place a layer of the sliced cauliflower florets into the bottom of a medium size baking dish and top with one third of the cheddar cheese.
    1 large head cauliflower, 1 1/2 cups cheddar cheese
  • Cover the cheese with another row of cauliflower, then another third of the cheese.
  • Top with one last layer of cauliflower. Set the remaining cheese aside.
  • Whisk together the heavy cream, garlic, salt, and pepper.
    1 cups heavy cream, 6 cloves garlic, 1/2 teaspoon salt, 1/4 teaspoon pepper
  • Pour all of the cream mixture evenly over the top of the cauliflower and cover tightly with foil.
  • Bake for 45 minutes, or until fork tender.
  • Once the cauliflower is tender, remove the foil and add the remaining cheddar cheese and bacon to the top.
    4 slices bacon
  • Return to the oven for 5-10 more minutes, or until the cheese is melted and starting to brown.

Notes

Tips and Techniques for the Best Keto Cauliflower Au Gratin

  • Cut the cauliflower into thin slices that resemble sliced potatoes and for easier layering.
  • Shred the cheese from a block rather than using pre-shredded bagged cheese. Bagged shredded cheese contains anti-caking agents that don't allow the cheese to melt as nicely and give it a grittier texture.
  • If you prefer a thicker sauce, you can try low carb thickeners (I don't care for them), or add 1-2 tablespoons of gluten free or regular flour (if you're not low carb).
  • Store leftovers in an air-tight container in the refrigerator. Use within 3-5 days for best results.
** Nutritional information is an estimate and may vary.

Nutrition

Serving: 1serving | Calories: 351kcal | Carbohydrates: 10g | Protein: 12g | Fat: 30g | Saturated Fat: 17g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 8g | Trans Fat: 0.02g | Cholesterol: 83mg | Sodium: 529mg | Potassium: 520mg | Fiber: 3g | Sugar: 4g | Vitamin A: 872IU | Vitamin C: 69mg | Calcium: 263mg | Iron: 1mg