Cauliflower Cheese Casserole {Keto}

If you love creamy mashed potatoes, you’re going to love this mashed Keto Cauliflower Cheese Casserole. Creamy, buttery mashed cauliflower (which tastes shockingly like mashed potatoes!) is topped with cheddar cheese for a blissful keto dish.

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I know, I know. A “mashed cauliflower casserole” probably isn’t a dish you’d even consider prior to keto. It just… doesn’t sound great. But I assure you, this Keto Cauliflower Cheese Casserole is INCREDIBLE! Cheddary, creamy mashed cauliflower makes for a keto recipe you’ll bake over and over again!

Why You’ll Love This Cheesy Cauliflower Casserole

• It uses simple, pantry staple keto ingredients.
• It will be ready in just about 40 minutes.
• It can be served as a main meal or a side dish.

Ingredients Needed for Cauliflower and Cheese Casserole

Ingredient quantities for this cauliflower and cheese casserole are located in the recipe card at the end of the post.

• Cauliflower
• Butter
• Heavy whipping cream
• Sour cream
• Shredded cheddar cheese
• Fresh parsley
• Bacon
• Salt and pepper

How to Make This Cauliflower Cheese Casserole Keto Recipe {Quick Overview}

This is just a quick overview of some of the steps involved in making the low carb cheesy cauliflower casserole. For the recipe in detail, including exact measurements used at each step, scroll to the recipe card at the end of the post.

Microwave and drain cauliflower. Then transfer it to a food processor or blender. Add heavy whipping cream and butter…

and pulse until smooth. Then add remaining ingredients except for 1/4 cup of the cheddar cheese…

and stir until smooth. Then, transfer mixture to a baking dish and cover with remaining cheddar cheese.

TIP: The baking dish pictured below is 7.5″ x  10.5.” You can use a similar rectangular size, or a square dish like 8″ x 8″ or 9″ x 9″.

Bake for 10 minutes or until cheese is melted.

What to Pair with Keto Cauliflower Cheese Casserole

Since this mashed cauliflower casserole is a little low in calories, fat, and protein, you’ll want to pair it with a heartier side, like chicken thighs or turkey (if you’re serving it for the holidays).

More Keto Cauliflower Recipes

Looking for more creative ways to use cauliflower? Try these recipes!

• Keto Cauliflower Casserole {Mac and Cheese Flavor!}
• Keto Cauliflower Soup with Bacon
• Keto Mashed “Potatoes” with Cream Cheese

Nutrition Facts for Cauliflower Cheese Casserole {Keto}

Per serving (six servings):

• 233 calories
• 20g fat
• 7g protein
• 5g net carbs

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Cauliflower Cheese Casserole {Keto}

If you love creamy mashed potatoes, you're going to love this Keto Cauliflower Cheese Casserole. Creamy, buttery mashed cauliflower (which tastes shockingly like mashed potatoes!) is topped with cheddar cheese for a blissful keto dish.

Print Pin Rate

Course: Side Dish

Cuisine: American

Keyword: Cauliflower and Cheese Casserole, Cauliflower Cheese Casserole keto, Cheesy Cauliflower Casserole

Prep Time: 10 minutes

Cook Time: 24 minutes

Total Time: 34 minutes

Servings: 6

Calories: 233kcal

Ingredients

• 1 head cauliflower about 2 1/2 pounds
• 2 tbsp butter
• 1/2 cup heavy whipping cream
• 1/4 sour cream
• 3/4 cup shredded Cheddar cheese divided
• 2 tbsp chopped parsley
• 1/2 tsp salt
• 1/4 tsp pepper
• 3 slices bacon cooked and crumbled

Instructions

• Preheat oven to 400 F.
• Cut cauliflower into florets. Place in a large bowl with 1" water. Microwave cauliflower on HIGH for 14 minutes or until cauliflower is tender. Drain water from cauliflower.
• Transfer mixture to the container of a food processor or blender. Add butter and heavy whipping cream. Pulse until mixture is smooth.
• Stir in sour cream, 1/2 cup cheddar cheese, parsley, salt, pepper, and bacon.
• Transfer mixture to a baking dish (see recipe notes for size recommendations). Sprinkle top with remaining 1/4 cup cheddar cheese.
• Bake at 400 F for 10 minutes or until cheese is melted.

Notes

Baking dish size: The baking dish pictured in this recipe post is 7.5" x  10.5." You can use a similar rectangular size, or a square dish like 8" x 8" or 9" x 9".

Nutrition Facts

Cauliflower Cheese Casserole {Keto}

Amount Per Serving

Calories 233 Calories from Fat 180

% Daily Value*

Fat 20g31%

Carbohydrates 8g3%

Fiber 3g13%

Protein 7g14%

* Percent Daily Values are based on a 2000 calorie diet.

Nutrition Disclaimer

Nutrition facts are included as a courtesy only. They are accurate to the best of our knowledge based on the ingredients and brands used, but their accuracy is not guaranteed. If applicable, sugar alcohols have already been removed from the total carb count.