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Best Keto Pizza Casserole Recipe

Keto Pizza Casserole

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  • Author: Stephanie Parlegreco
  • Total Time: 40-45 minutes
  • Yield: 10 Servings 1x


Easy Keto Low Carb Pizza Casserole is a quick and easy dinner that not only the whole family will love but is also perfect for meal prepping. Use your favorite toppings, bake, and EAT!


  • 6 cups chopped cauliflower 
  • 2 tbsp olive oil 
  • ½ tsp salt 
  • ½ tsp pepper 
  • 1 tbsp Italian seasoning 
  • 1 tbsp fresh garlic 
  • 1 lb Italian sausage, mild or hot 
  • 2 cups marinara sauce or pizza sauce 
  • 3 cups shredded mozzarella 
  • 1 cup sliced mushrooms 
  • 20 slices pepperoni 




Be sure to cut the cauliflower into larger pieces, as they will shrink once baked. 

Use any of your favorite pizza toppings, the options really are endless. 

Make-Ahead Instructions: Prep the keto pizza casserole ahead of time and keep it stored in the fridge for up to 24 hours before baking. 

Storing Instructions: After the pizza casserole has been baked, store your leftovers in an airtight container and place them in the fridge for 4-5 days.  

Reheating the whole pizza casserole while frozen: Preheat the oven to 350 degrees, and bake for 40-50 minutes until hot and bubbly. 

Reheating Leftovers: In a microwave-safe bowl or plate, microwave for 30-second intervals. 

To Freeze Whole: Bake the whole casserole in a metal tin pan for easy cleanup. Remove from the oven and let cool. Once cooled wrap the pan in foil a few times and place in the freezer for 2-3 months. 

To Freeze Small Portions: Pre-portioned servings can either be placed in Ziploc bags then frozen, or in a plastic container and then frozen. 

Dairy-Free Option: Replace the mozzarella with vegan shredded cheese instead. 

Vegetarian Option: Instead of using any kind of meat, you can load it all with all kinds of veggies.

  • Prep Time: 10-15 minutes
  • Cook Time: 30 minutes
  • Category: Main Dishes
  • Method: Baking
  • Cuisine: Italian