Keto Twice Baked Cauliflower Casserole

Twice Baked Cauliflower is the perfect side dish for when you are on a low carb or a keto diet. This delicious and healthy dish is made with cauliflower, bacon, and cheese. It tastes a lot like twice-baked potatoes but without all the carbs. The bacon adds a smoky flavor, while the cheese gives it a creamy texture. So if you’re looking for a tasty yet low-carb option, look no further than Twice Baked Cauliflower!

Twice baked cauliflower in a blue casserole dish.

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Keto Cauliflower Casserole

I can’t tell you how many times I have made this Twice Baked Cauliflower Casserole lately, but it has been more times than I can count. I got the inspiration for this recipe from Kalyn, at Kalyn’s Kitchen. She is one amazing low-carb food blogger.

Everyone around me has been on a keto diet, and sometimes you just miss old favorites like mashed potatoes. I am not one for saying something tastes like something else, I want it to taste close. I really think you can turn cauliflower into a good substitute for mashed potatoes when you mix in a few more ingredients.

This cauliflower recipe makes a great side dish for Easter, Thanksgiving, and Christmas. It goes great with ham, turkey, and roast beef.

Twice Baked Cauliflower Ingredients

Here’s a list of what you need:

  • Cauliflower Florets
  • Butter
  • Green onions
  • Cooked bacon
  • Shredded Cheddar cheese
  • Sour cream
  • Cream cheese

For this recipe, I steam the cauliflower. In the video, I show you how to do this with an Instant Pot. You can steam cauliflower in your favorite way. That could be with a steamer or perhaps you will want to dig around in your pantry for the steamer insert that came with your pots and pans set.

If you don’t have a steamer you can boil small pieces or chunks of cauliflower in a large pot of boiling salted water. Be sure to drain it well because you don’t want the mashed cauliflower to be watery.

Twice baked cauliflower ingredients on a tray.

How to Make Cauliflower Creamy

For me, the real secret in this recipe is overcooking the cauliflower. If you overcook it until it is tender and soft, it will have the texture of mashed potatoes without all of the carbs.

So normally I steam vegetables for about 4 to 5 minutes in my pressure cooker. I steam for 7 minutes when I want the cauliflower to be extra smooth and creamy.

How to Make Twice Baked Cauliflower Casserole

  1. Steam cauliflower until soft.
  2. Place cauliflower into a large mixing bowl and add melted butter, sliced green onions, shredded Cheddar cheese, cooked bacon, sour cream, and cream cheese.
Steamed cauliflower and other ingredients in a mixing bowl.
  1. Place the mixture in a blender or food processor.
Steamed cauliflower and other ingredients in a food processor.
  1. Puree until smooth. Taste and season with salt and black pepper if desired.
  2. Place the cauliflower cheese mixture in a 2-quart casserole dish and sprinkle the top with additional cheese and bacon.
Twice baked cauliflower before baking.
  1. Bake at 350°F for 20 to 25 minutes.

If you don’t have a blender or food processor, you can mash the cauliflower mixture with a potato masher.

Twice baked cauliflower in a casserole dish.

Cauliflower Casserole Keto Variations

Here are some great ways to add or change the flavors of this dish:

  • Use a variety of cheeses. I love using smoked cheese because it really adds something extra to the dish. Sharp cheddar cheese, Monterey Jack, Pepper Jack, or Parmesan cheese are great ones for this dish.
  • Add chopped onions or chives.
  • MIx in different spice and herb blends. A little garlic powder would be great.

What to Serve with Low Carb Cauliflower Casserole?

If you want to have an entire meal that is low carb I suggest pairing this with either a baked chicken or a grilled steak. For vegetables, I like to serve this with some green beans with bacon or some grilled asparagus.

Storing, Freezing and Reheating Baked Cauliflower Casserole

After the casserole has cooled, you can place any leftover amount in an air-tight container it will last in your refrigerator for about a week. Reheat this in a microwave in a microwave-safe dish in 30 seconds increments

If you want to freeze the entire casserole, cook it completely, and then allow it to cool to room temperature. Wrap first in plastic wrap, and then wrap in aluminum foil, and store in your freezer for up to six months.

To reheat from frozen, thaw completely in your refrigerator. Remove plastic wrap and aluminum foil. Cover the keto cauliflower casserole with aluminum foil, and heat for 10 minutes at 350 degrees, then remove the aluminum foil. Then place the casserole back into the oven and continue to heat until the cheese is bubbly.

A spoonful of twice baked cauliflower.

Favorite Low Carb Recipes

Be sure to check out more of my easy side dish recipes and the best low carb recipes.

Twice baked cauliflower in a blue casserole dish.

Twice Baked Cauliflower

Enjoy this low carb and keto friendly cauliflower dish that tastes just like twice baked potatoes. 
5 from 11 votes
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Course: Side Dish
Cuisine: American
Keyword: Cauliflower, Keto, Low Carb
Prep Time: 10 minutes
Cook Time: 25 minutes
Total Time: 35 minutes
Servings: 8
Calories: 252kcal


  • 2 1/2 pounds cauliflower
  • 2 tablespoons butter melted
  • 2 tablespoons sliced green onions
  • 2 cups shredded cheddar cheese divided use
  • 1/2 cup chopped bacon cooked, divided use
  • 1 cup sour cream
  • 2 tablespoons cream cheese optional


  • Steam the cauliflower until soft. This can be done in an Instant Pot for 7 minutes for super creamy cauliflower or 5 minutes for more texture, followed by a quick release.
  • Preheat the oven to 350°F.
  • Place the steamed cauliflower into a large bowl. Add the butter, green onions, 1 cup of shredded cheddar, 1/4 cup of bacon, sour cream, and cream cheese (if desired) and mix with an electric mixer until smooth.
  • Transfer the mixture to a 2-quart casserole dish, top with the remaining cheddar cheese and bacon, and bake for 20 to 25 minutes.



Calories: 252kcal | Carbohydrates: 8g | Protein: 10g | Fat: 20g | Saturated Fat: 12g | Cholesterol: 57mg | Sodium: 292mg | Potassium: 501mg | Fiber: 2g | Sugar: 3g | Vitamin A: 615IU | Vitamin C: 68.9mg | Calcium: 270mg | Iron: 0.8mg

About Stephanie Manley

I recreate your favorite restaurant recipes, so you can prepare these dishes at home. I help you cook dinner, and serve up dishes you know your family will love. You can find most of the ingredients for all of the recipes in your local grocery store.

Stephanie is the author of's Dining Out in the Home, and's Dining Out in the Home 2.

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Reader Interactions


  1. Christopher Schultz

    I nuked half a cut up cauliflower 10 m uncovered, Stirred and covered, nuked 4 more minutes,
    removed condensation from lid, stirred out more steam nuked 4 more mins covered, stir let sit
    til barely steaming, season w/ salt pepper, thyme, garlic powder, put in foood processor with butter
    and cream cheese, process 1 minute, remove into bowl add cheddar & bacon bits nuke 1 minute

  2. Paula

    5 stars
    This is an amazingly delicious keto dish. One of the best I’ve ever eaten. Tastes just like a Twice Baked Potato without all the carbs. 😋😋😋

  3. Cat

    5 stars
    I made this recipe exactly as the author stated. I used my steamer basket to cook the cauliflower until it was super soft. My husband thought it was a twice baked potato dish! This is a recipe worth printing and keeping in your favorite recipe box.

  4. Bella Hardy @

    5 stars
    This twice baked cauliflower looks so zesty and tasty! Absolutely love your creative idea! Thanks for sharing, Stephanie!

  5. lisa hackbarth

    I am just learning about the keto diet this week. my surgeon suggested I do this to prepare for an upcoming procedure. to say I am overwhelmed is an understatement. Your recipes are awesome and I appreciate your guidance along this learning journey. Love cauliflower and spaghetti squash and am so happy to see they are approved to eat. thanks you so much!

  6. Mary

    This looks delish…..I just happen to have a head of cauliflower in the fridge…Thanks so much for this….Trying low carb…its hard…

  7. Pat Turner

    In video it appears you are putting all ingredients in instant pot. If so I would like to have your recipe for cauliflower prepared this way.

  8. Bill c

    Looks great!! The wife and I are both doing low carb!! Would be great to see some great low carb ideas!! Thanks

5 from 11 votes (3 ratings without comment)

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