Craving the comforting taste of pizza while staying true to your keto goals? This Keto Pizza Casserole delivers all the flavor and satisfaction of traditional pizza without the carbs. Inspired by American comfort food and crafted with fresh, simple ingredients, this dish is perfect for both summer and winter meals.
Growing up in a kitchen that never shied away from indulgence, pizza was a weekly staple. Once I transitioned to a ketogenic lifestyle, I knew I had to find a way to recreate that experience. This casserole became my go-to solution—cheesy, savory, and endlessly customizable.
Why You’ll Love This Keto Pizza Casserole
There are countless reasons why this dish is a standout in the world of low-carb cooking.
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First, it’s incredibly easy to make, even on busy weeknights.
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Second, it’s versatile—you can switch up the ingredients to suit your preferences.
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Third, it’s rich in protein and healthy fats, helping you stay full longer.
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Finally, it’s a crowd-pleaser that even carb-lovers will enjoy.
Whether you’re meal prepping for the week or hosting a casual dinner, this keto pizza casserole fits the bill.
Ingredients for a 4-Serving Keto Pizza Casserole
Base Layer:
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1 lb ground beef or Italian sausage
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1/2 cup chopped onion
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2 cloves garlic, minced
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1/2 tsp salt
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1/4 tsp black pepper
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1/2 tsp dried oregano
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1/4 tsp crushed red pepper flakes (optional)
Sauce:
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1 1/4 cups sugar-free marinara sauce
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1/2 tsp Italian seasoning
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1/4 tsp garlic powder
Toppings:
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1 1/2 cups shredded mozzarella cheese
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1/4 cup grated Parmesan cheese
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1/2 cup sliced pepperoni
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1/4 cup chopped green bell pepper
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1/4 cup sliced black olives (optional)
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Fresh parsley or basil for garnish (optional)
Step-by-Step Instructions to Make Keto Pizza Casserole
1. Preheat and Prepare
Preheat your oven to 375°F (190°C). Grease a 9×9-inch baking dish with olive oil or non-stick spray.
2. Cook the Meat Base
In a skillet over medium heat, sauté chopped onion for about 3 minutes until translucent. Add minced garlic and stir for another 30 seconds. Add ground beef and cook until browned, breaking it up with a spatula. Season with salt, pepper, oregano, and red pepper flakes.
Drain any excess fat, then spread the cooked meat evenly in your prepared casserole dish.
3. Mix and Pour the Sauce
In a small bowl, combine marinara sauce, Italian seasoning, and garlic powder. Pour this mixture over the meat layer, ensuring even coverage.
4. Add Cheese and Toppings
Layer the shredded mozzarella over the sauce, followed by Parmesan. Top with sliced pepperoni, green peppers, and olives.
5. Bake to Perfection
Place the dish in the preheated oven and bake uncovered for 20–25 minutes. The cheese should be fully melted and slightly golden.
6. Rest and Serve
Let the casserole sit for 5 minutes before slicing. Garnish with fresh herbs if desired and serve hot.
Nutritional Breakdown (Per Serving)
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Calories: 420
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Protein: 28g
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Fat: 33g
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Total Carbs: 6g
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Fiber: 2g
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Net Carbs: 4g
Helpful Tips for the Best Keto Pizza Casserole
To enhance the flavor and texture of your keto pizza casserole, consider the following:
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Swap ground beef with spicy Italian sausage for an extra kick.
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Add sautéed mushrooms or spinach for more nutrients.
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Mix in a tablespoon of cream cheese for a creamier base.
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Layer cooked cauliflower rice underneath for a more structured “crust” feel.
Custom Variations for Keto Pizza Casserole
Chicken Pizza Casserole
Use ground chicken or turkey and add a touch of smoked paprika for flavor.
Vegetarian Keto Pizza Casserole
Leave out the meat and increase the vegetables—zucchini, mushrooms, and spinach all work well.
Supreme Style
Include onions, sausage, bell peppers, mushrooms, and olives for a pizza supreme-inspired version.
Side Dishes to Serve with Keto Pizza Casserole
Pair your casserole with these low-carb sides:
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Arugula or mixed greens salad with vinaigrette
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Garlic butter sautéed green beans
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Roasted cauliflower or broccoli
These sides complement the richness of the casserole without adding carbs.
Storage and Reheating Instructions
This keto pizza casserole stores well and is excellent for meal prep.
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Refrigerator: Store in an airtight container for up to 4 days.
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Freezer: Freeze individual portions for up to 2 months.
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Reheat: Warm in a microwave for 2–3 minutes or in the oven at 350°F for 10–12 minutes.
Frequently Asked Questions
Can I use store-bought pizza sauce?
Yes. Just ensure it’s sugar-free or low in carbs (3g net carbs or less per serving).
Is this casserole suitable for keto meal prep?
Absolutely. It’s great for batching and holds up well over several days.
Can I add cream or eggs to the mix?
Yes. Adding an egg or a little cream to the meat layer gives a more quiche-like texture.