Sunny found keto pizza casserole while scrolling Pinterest late in the afternoon, trying to plan dinner without blowing her low-carb goals. One photo showed a bubbling casserole packed with pepperoni, sausage, cheese, and rich pizza sauce no crust in sight. She is not an expert cook, yet casseroles like this always feel doable to her. You brown, layer, bake, and dinner is handled. Even if the cheese browns more on one corner or the toppings shift while baking, she knows the flavor will still hit that pizza craving perfectly. That satisfying, no-crust comfort is exactly why keto pizza casserole has become such a popular weeknight favorite.
Table of Contents
Keto Pizza Casserole Overview
What Is Keto Pizza Casserole
Keto pizza casserole is a low-carb, crustless pizza-style dish made by layering pizza toppings and cheese in a baking dish. Instead of dough, the recipe relies on meats, cheese, and sauce to create structure and flavor. Everything bakes together into a bubbly, sliceable casserole that tastes like pizza without the carbs.
This dish focuses on familiar pizza flavors—pepperoni, sausage, marinara, and mozzarella—while keeping carbs low. Because there’s no crust to prepare, the recipe stays simple and fast. It works well for keto, low-carb, and gluten-free eaters.
Keto pizza casserole is hearty enough to serve as a main dish. It also reheats well, which makes it ideal for meal prep or leftovers.
Why Crustless Pizza Works So Well
Removing the crust allows the toppings to shine. The meats and cheese create a rich, satisfying base, while the sauce ties everything together. Baking everything together lets the flavors meld instead of sitting separately like on a traditional pizza.
Another advantage is flexibility. You can customize the toppings easily without worrying about overloading a crust. This makes the recipe adaptable to different preferences while staying keto-friendly.
Ingredients for Keto Pizza Casserole
Ingredient List With Measurements
| Ingredient | Measurement |
|---|---|
| Italian sausage (mild or spicy) | 1 pound |
| Pepperoni slices | 1 cup |
| Low-carb marinara or pizza sauce | 1 1/2 cups |
| Mozzarella cheese, shredded | 2 cups |
| Cheddar cheese, shredded | 1 cup |
| Cream cheese, softened | 4 ounces |
| Eggs | 2 large |
| Onion powder | 1/2 teaspoon |
| Garlic powder | 1/2 teaspoon |
| Italian seasoning | 1 teaspoon |
| Olive oil | 1 tablespoon |
| Black olives or bell peppers (optional) | 1/2 cup |
These ingredients create a rich, cheesy casserole with classic pizza flavor and minimal carbs.
Ingredient Tips for Best Results
Choose a low-carb marinara sauce with no added sugar to keep the recipe keto-friendly. Italian sausage adds built-in seasoning, which helps deepen flavor without extra work.
Mozzarella provides stretch and melt, while cheddar adds sharpness. Cream cheese helps bind the casserole and creates a creamy texture that holds together once baked. Eggs help set the layers so the casserole slices cleanly.
How to Make Keto Pizza Casserole
Preparing the Meat Layer
Preheat the oven to 375°F and grease a 9×13-inch baking dish.
Heat olive oil in a skillet over medium heat. Add Italian sausage and cook until browned, breaking it into crumbles. Drain excess grease if needed.
Season the cooked sausage with onion powder, garlic powder, and Italian seasoning. Remove from heat and set aside.
Mixing and Layering the Casserole
In a bowl, mix softened cream cheese with eggs until smooth. Stir in half of the marinara sauce.
Spread the sausage evenly in the bottom of the baking dish. Pour the cream cheese mixture over the sausage and spread gently.
Layer pepperoni, olives or peppers if using, and the remaining marinara sauce. Top with mozzarella and cheddar cheese.
Baking and Serving Keto Pizza Casserole
Baking Until Bubbly
Bake uncovered for 25–30 minutes, until the cheese is melted, bubbly, and lightly golden on top.
Let the casserole rest for 10 minutes before serving. This helps it set and makes slicing easier.
Best Ways to Serve It
Serve keto pizza casserole warm, sliced into squares. It pairs well with a simple green salad or roasted low-carb vegetables.
Leftovers store well and reheat easily, making this dish ideal for meal prep or quick lunches.
FAQs
Is keto pizza casserole really low carb?
Yes. This casserole is crustless and uses low-carb marinara, meats, cheese, and eggs, making it suitable for keto and low-carb diets.
Can I make keto pizza casserole ahead of time?
Absolutely. You can assemble it ahead, refrigerate it, and bake when ready. It also reheats very well.
Why does my keto pizza casserole come out watery?
This usually happens if excess grease from the sausage isn’t drained or if the sauce contains too much liquid. Drain meats well and use a thick, low-carb sauce.
Can I change the pizza toppings?
Yes. Mushrooms, olives, bell peppers, pepperoncini, or cooked bacon all work well. Keep veggies low-carb and pre-cook them if watery.
Can keto pizza casserole be frozen?
Yes. Freeze fully baked and cooled casserole for up to 2 months. Thaw overnight in the refrigerator before reheating.
Keto pizza casserole delivers everything people crave about pizza without the carbs. Loaded with seasoned sausage, pepperoni, gooey cheese, and rich pizza sauce, this crustless casserole is comforting, filling, and easy to prepare. It’s perfect for busy weeknights, meal prep, or feeding a family with different dietary needs. When pizza cravings hit but carbs are off the table, this keto pizza casserole always satisfies.
Keto Pizza Casserole
Ingredients
- 1 pound Italian sausage mild or spicy
- 1 cup pepperoni slices
- 1 ½ cups low-carb marinara or pizza sauce
- 2 cups shredded mozzarella cheese
- 1 cup shredded cheddar cheese
- 4 ounces cream cheese softened
- 2 large eggs
- 1 tablespoon olive oil
- ½ teaspoon onion powder
- ½ teaspoon garlic powder
- 1 teaspoon Italian seasoning
- ½ cup black olives or bell peppers optional
Instructions
- Preheat oven to 375°F and grease a 9×13-inch baking dish.
- Heat olive oil in a skillet over medium heat.
- Add Italian sausage and cook until browned, breaking into crumbles.
- Drain excess grease and season with onion powder, garlic powder, and Italian seasoning.
- In a bowl, mix softened cream cheese with eggs until smooth.
- Stir in half of the marinara sauce.
- Spread cooked sausage evenly in the baking dish.
- Pour cream cheese mixture over the sausage and spread gently.
- Top with pepperoni, olives or peppers if using, and remaining marinara sauce.
- Sprinkle mozzarella and cheddar cheese evenly over the top.
- Bake uncovered for 25–30 minutes until cheese is bubbly and lightly golden.
- Let rest 10 minutes before slicing and serving.