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An extreme close-up shot of a serving of Keto Pizza Casserole on a white plate, highlighting the bubbly, browned cheese and crispy pepperoni.

Keto Pizza Casserole: The Ultimate Cheesy Low-Carb Bake

The ultimate Keto Pizza Casserole recipe. This easy low-carb bake features a hearty ground beef and cauliflower rice base, rich marinara, and a perfectly melted mozzarella and provolone topping with crispy pepperoni. A family-favorite dinner!
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Prep Time 25 minutes
Cook Time 25 minutes
Total Time 50 minutes
Servings: 8 servings
Course: Dinner, Main Course
Cuisine: American, Italian
Calories: 450
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Ingredients Equipment Method Notes

Ingredients
  

  • 1 large head cauliflower or about 4-5 cups of riced cauliflower
  • 1 tbsp avocado oil 15ml
  • 1 lb ground beef 450g, 80/20 recommended
  • 2 cups low-carb marinara sauce 475ml, no sugar added
  • 1 tsp garlic powder 5g
  • 1 tsp onion powder 5g
  • 1 tsp dried oregano
  • Salt and freshly ground black pepper to taste
  • 2 cups shredded low-moisture mozzarella cheese 225g
  • 1 cup sliced provolone cheese 115g, about 6-8 slices
  • 4 oz pepperoni slices 115g

Equipment

  • 1 Large Skillet
  • 1 9x13 Inch Casserole Dish
  • 1 Food Processor Optional, can use a box grater.
  • 1 Cheesecloth or clean kitchen towel

Method
 

  1. Preheat your oven to 400°F (200°C). Rice the cauliflower using a food processor or box grater. Microwave for 5-7 minutes until tender. Let cool, then transfer to a cheesecloth and squeeze out all excess liquid. This is crucial. Season the dry cauliflower with salt and pepper.
  2. Heat avocado oil in a large skillet over medium-high heat. Add ground beef and cook until deeply browned. Drain excess grease. Stir in garlic powder, onion powder, oregano, salt, and pepper. Cook for 1 minute until fragrant. Pour in the marinara sauce and simmer for 5 minutes.
  3. Spread the seasoned cauliflower rice in an even layer in a 9x13 inch casserole dish. Pour the meat sauce evenly over the top. Sprinkle with the shredded mozzarella, then layer the provolone slices on top.
  4. Arrange pepperoni slices over the cheese. Bake for 15-20 minutes, until the cheese is melted and bubbly. Switch the oven to broil and cook for 2-3 minutes, watching closely, until the cheese is browned and the pepperoni is crisp. Let rest for 10 minutes before serving.

Notes

Don't Skip the Squeeze: Wringing the water out of the cauliflower is the most important step for the right texture.
Shred Your Own Cheese: For the best melt, shred a block of low-moisture mozzarella yourself.
Broil with Caution: The final broil happens fast. Stay by the oven to prevent burning.
Let It Rest: Allowing the casserole to sit for 10 minutes before cutting is crucial for it to set properly.