This Keto Cauliflower Pizza Casserole is warm, cheesy, and full of pizza flavor without the carbs. It feels like a comfort meal, but it fits a low carb or keto plan. The cauliflower gives a gentle bite, the sauce is tangy, and the cheese melts into a golden top. This recipe is a crowd-pleaser, easy to make, and great for busy weeknights or a casual dinner with friends. If you like a crisp cauliflower side, you might also enjoy this air fryer cauliflower recipe for a quick snack. Get ready to make a dish everyone will ask about, and have fun with the toppings when it comes out of the oven.
How to prepare Keto Cauliflower Pizza Casserole
- Preheat the oven to 375°F (190°C).
- Steam or boil about 1 large head of cauliflower until soft, then drain well and pat dry.
- Chop the cauliflower into small florets or pulse in a food processor until rice-like.
- In a bowl, mix the cauliflower with 1 cup of shredded mozzarella, 1/2 cup of grated Parmesan, 2 beaten eggs, 1/2 cup low-sugar pizza sauce, 1 teaspoon Italian seasoning, salt and pepper to taste.
- Spread the mixture into a greased 9×9 inch baking dish, pressing down lightly.
- Spoon a thin layer of pizza sauce over the top, then add more mozzarella and your favorite low-carb toppings like pepperoni, bell pepper, or olives.
- Bake for 20 to 25 minutes, until the top is golden and the casserole is set. Let it rest 5 minutes before serving.

Why You’ll Love Keto Cauliflower Pizza Casserole
- Low carb and keto friendly, it keeps you on track without losing pizza flavor.
- Cheesy and satisfying, yet lighter than a regular pizza crust.
- Easy to make with simple ingredients you likely have on hand.
- Flexible, you can change the toppings to fit your taste or what you have.
Tips for success
- Squeeze out as much water from the cooked cauliflower as you can, this stops the casserole from getting soggy.
- Use room temperature eggs and cheese so they blend evenly.
- If you like a firmer texture, pulse the cauliflower a little less in the food processor.
- Try a mix of cheeses for more flavor, like mozzarella and a bit of sharp cheddar.
- Let it rest after baking, this helps it set and slice cleanly.
Serving Suggestions
- Serve with a fresh green salad and a drizzle of olive oil and lemon.
- Add a side of steamed greens, like broccoli or asparagus.
- Top with fresh basil or a sprinkle of red pepper flakes for a flavor boost.
- Cut into squares and serve with extra warmed pizza sauce for dipping.

FAQs
Q: Is this casserole good for a keto diet?
A: Yes, it is low in carbs and high in fat from the cheese, so it fits a typical keto plan.
Q: Can I make this ahead and reheat it?
A: Yes, you can make it ahead, cool it, cover, and store in the fridge. Reheat in the oven at 350°F (175°C) until warm.
Q: Can I freeze the casserole?
A: Yes, bake first or freeze unbaked in a freezer-safe dish. Thaw in the fridge before baking or reheat from frozen with extra time.
Q: What toppings work best?
A: Pepperoni, cooked sausage, mushrooms, bell peppers, olives, and spinach all work well. Keep higher-carb toppings low or skip them.
Q: Do I need to add almond flour or coconut flour to bind it?
A: Not required if you squeeze out the water well and use eggs and cheese to bind the mix. You can add a tablespoon of almond flour if you want more structure.
Conclusion
For a tested, low carb twist on pizza that feels like comfort food, try this casserole and change toppings to your liking. If you want another take on cauliflower pizza, see the Jar of Lemons’ Cauliflower Pizza Casserole (Low Carb / Keto) recipe for more ideas and tips.

Keto Cauliflower Pizza Casserole
Ingredients
Method
- Preheat the oven to 375°F (190°C).
- Steam or boil the cauliflower until soft, then drain well and pat dry.
- Chop the cauliflower into small florets or pulse in a food processor until rice-like.
- In a bowl, mix the cauliflower with shredded mozzarella, grated Parmesan, beaten eggs, low-sugar pizza sauce, Italian seasoning, salt, and pepper.
- Spread the mixture in a greased 9x9 inch baking dish, pressing down lightly.
- Spoon a thin layer of pizza sauce over the top, then add more mozzarella and your favorite toppings.
- Bake for 20 to 25 minutes, until the top is golden and the casserole is set.
- Let it rest for 5 minutes before serving.
