Craving pizza while trying to stick to a low-carb lifestyle? You don’t have to give up those cheesy, comforting flavors anymore. This High Protein Low Carb Pizza Casserole with Cottage Cheese brings everything people love about pizza into one satisfying, crustless bake.
The first time I made this casserole, I was simply trying to use up a container of cottage cheese before it expired. I wasn’t expecting much, but after one bite, it became one of those recipes that quietly earned a permanent place in my weekly dinner rotation.
If you’re searching for a low carb pizza casserole with cottage cheese, a keto pizza casserole with ground beef, or an easy meal-prep recipe packed with protein, you’re in the right place. It delivers the classic pizza taste without the heavy crust or unnecessary carbs.
Whether you’re following keto, eating high protein, or just looking for a family-friendly weeknight dinner, this casserole is simple to prepare, easy to customize, and filling enough to keep everyone happy.
Why You’ll Love This Recipe
- High in protein and naturally low in carbs. Cottage cheese, mozzarella, and lean meat create a filling meal that fits keto-friendly eating.
- Perfect for busy weeknights. Everything comes together in one baking dish with very little cleanup.
- Easy to customize. Switch between ground beef, Italian sausage, or extra vegetables depending on what you have at home.
- Excellent for meal prep. The leftovers taste just as good the next day and reheat beautifully.
What Makes This High Protein Low Carb Pizza Casserole So Good?
There are plenty of crustless pizza casseroles online, but many rely on large amounts of cream cheese or heavy cream. This version takes a different approach by making blended cottage cheese the star of the recipe.
Blending the cottage cheese creates a smooth, creamy texture that resembles ricotta. Once baked, it melts into the sauce and cheese so well that most people won’t even realize it’s there.
Another reason this recipe works so well is the balance between protein and flavor. Lean ground beef (or Italian sausage), mozzarella, and a light layer of pizza sauce create familiar pizza flavors without overwhelming the casserole with grease.
The seasoning also makes a noticeable difference. Italian herbs, garlic powder, onion powder, and a pinch of crushed red pepper bring out the classic pizzeria taste while keeping the ingredient list simple.
Unlike traditional pizza, there’s no dough to prepare or wait for. You simply layer everything together and bake until the cheese turns bubbly and golden.
If you’re looking for a low carb pizza casserole no crust that feels comforting without feeling heavy, this recipe checks every box.
Ingredients
For the Filling
- 1 pound lean ground beef (or Italian sausage)
- 2 cups cottage cheese
- 1 cup shredded mozzarella cheese
- ½ cup grated Parmesan cheese
- ¾ cup low-sugar marinara or pizza sauce
- 20 slices turkey pepperoni or regular pepperoni
- 1 green bell pepper, diced
- 1 cup sliced mushrooms
- ½ small onion, diced
- 2 teaspoons Italian seasoning
- 1 teaspoon garlic powder
- ½ teaspoon onion powder
- ½ teaspoon crushed red pepper flakes (optional)
- Salt and black pepper, to taste
- Fresh basil or parsley for garnish
Ingredient Notes
Using full-fat cottage cheese gives the casserole a richer texture, but low-fat cottage cheese works well if you’re aiming for extra protein with fewer calories.
Blend the cottage cheese for about one minute until completely smooth. This small step removes the curds and creates a creamy base that’s remarkably similar to ricotta.
Lean ground beef keeps the casserole lighter, while low carb pizza casserole with Italian sausage offers a richer, more traditional pizza flavor. Both options work beautifully.
Choose a marinara sauce without added sugar whenever possible. Since the sauce is one of the few sources of carbohydrates in this dish, a lower-sugar option helps keep the recipe keto-friendly.
Freshly shredded mozzarella melts much more smoothly than pre-shredded cheese because it doesn’t contain anti-caking agents.
Optional Add-ins
These ingredients allow you to customize your casserole while keeping it low carb.
- Black olives
- Fresh spinach
- Jalapeños
- Bacon pieces
- Extra mushrooms
- Roasted cauliflower florets (great for a low carb pizza casserole with cauliflower)
- Riced cauliflower for extra fiber
- Diced zucchini
- Extra Parmesan cheese
- Red onion slices
These additions add texture and flavor without changing the overall simplicity of the recipe.
For Serving
Serve your casserole with one or more of these easy side dishes:
- Fresh Caesar salad
- Mixed green salad with olive oil vinaigrette
- Roasted broccoli
- Garlic butter asparagus
- Air fryer Brussels sprouts
- Cucumber salad
- Sliced avocado
- Keto garlic bread
- Parmesan roasted zucchini
These fresh sides balance the richness of the casserole while keeping the meal low in carbohydrates.
Best Cheese for High Protein Low Carb Pizza Casserole with Cottage Cheese
Mozzarella is the first cheese I reach for because it creates those stretchy, golden cheese pulls everyone expects from pizza. It melts evenly and doesn’t overpower the other ingredients.
Parmesan brings a deeper, slightly nutty flavor that makes the casserole taste more like something from an Italian restaurant. Even a small amount makes a noticeable difference.
Cottage cheese is the real secret here. Once blended, it becomes creamy instead of lumpy, giving the casserole a protein-rich base without making it heavy.
If you like extra richness, a little cream cheese blends perfectly with the cottage cheese. It creates a silky filling while keeping the recipe low in carbs.
For even more flavor, try mixing mozzarella with provolone or Monterey Jack. The combination melts beautifully and gives every bite a gooey, cheesy finish.
How to Make High Protein Low Carb Pizza Casserole with Cottage Cheese
Step 1 – Cook the Meat
Heat a large skillet over medium heat and add the ground beef or Italian sausage. Break it into small pieces with a wooden spoon as it cooks. Once the meat is fully browned, drain any excess grease if needed.
Stir in the diced onion, bell peppers, mushrooms, garlic powder, onion powder, Italian seasoning, and a pinch of black pepper. Cook for another 3 to 4 minutes until the vegetables soften slightly and become fragrant.
Step 2 – Prepare the Creamy Cottage Cheese Layer
Place the cottage cheese into a blender or food processor. Blend until completely smooth. If you’re using cream cheese, blend it together with the cottage cheese for an extra creamy texture.
Spread the blended mixture evenly across the bottom of a lightly greased 9×13-inch baking dish. This protein-rich layer replaces the traditional pizza crust while keeping the casserole soft and satisfying.
Step 3 – Assemble the Pizza Casserole
Spoon the cooked beef mixture over the cottage cheese layer.
Spread the marinara sauce evenly across the top. Sprinkle half of the mozzarella cheese, followed by the pepperoni slices and any extra toppings you enjoy, such as olives or roasted cauliflower.
Finish with the remaining mozzarella and Parmesan cheese so every bite gets a golden, cheesy topping.
Step 4 – Bake Until Hot and Bubbly
Preheat the oven to 375°F (190°C).
Bake the casserole for 20 to 25 minutes, or until the cheese is fully melted, bubbling around the edges, and lightly golden on top.
Let the casserole rest for about 5 minutes before slicing. This short resting time helps everything set, making each serving easier to cut and keeping the layers together.
Personal Observation
The first time I blended cottage cheese for this casserole, I wasn’t expecting much. Once it baked, though, the texture completely changed. It became smooth, creamy, and almost identical to ricotta, while adding much more protein. Now it’s my favorite shortcut whenever I want a comforting pizza-inspired dinner that still fits into a low-carb meal plan.
My Pro Tips & Kitchen Notes
- Blend the cottage cheese first. Why? A smooth base creates a creamier casserole without visible curds.
- Cook vegetables before layering. Why? Raw vegetables release water while baking, which can make the casserole watery.
- Drain the meat well. Why? Removing excess grease keeps the casserole rich without becoming oily.
- Use freshly shredded mozzarella. Why? It melts more evenly and creates better cheese pulls than most pre-shredded varieties.
- Let the casserole rest before serving. Why? Resting helps the layers firm up so each slice holds together beautifully.
Make Ahead Tips
Prepare the meat mixture up to two days in advance and keep it refrigerated.
You can also assemble the entire casserole, cover it tightly, and refrigerate it overnight. Bake it fresh the next day for an easy weeknight dinner.
For meal prep, divide leftovers into individual containers so lunch is ready for the next few days.
Alternative Cooking Methods
Air Fryer: Bake smaller portions in an oven-safe air fryer dish at 350°F for about 12–15 minutes.
Slow Cooker: For a low carb pizza casserole crockpot version, layer the ingredients and cook on LOW for 3–4 hours until hot and bubbly.
Cauliflower Version: Add roasted cauliflower florets or riced cauliflower for extra vegetables while keeping the recipe low in carbohydrates.
No Cauliflower Version: Skip the vegetables completely for a simple low carb pizza casserole no cauliflower that focuses on meat, cheese, and sauce.
What to Serve With
This casserole is filling on its own, but adding a simple side dish makes it feel like a complete dinner.
- Caesar salad
- Garlic butter green beans
- Roasted asparagus
- Air fryer broccoli
- Zucchini noodles
- Cucumber avocado salad
- Sautéed spinach
- Keto garlic bread
- Roasted Brussels sprouts
Storage & Freezing Tips
Store leftover casserole in an airtight container in the refrigerator for up to 4 days.
Reheat individual portions in the microwave for 1–2 minutes, or warm them in a 350°F oven for about 10 minutes if you prefer the cheese to crisp up again.
To freeze, let the casserole cool completely. Wrap the baking dish tightly with plastic wrap and foil, or transfer portions to freezer-safe containers. Freeze for up to 3 months.
Thaw overnight in the refrigerator before reheating for the best texture.
Estimated Nutrition
- Nutritional values are estimates and will vary depending on the brands and ingredients used.
Frequently Asked Questions
Can you taste the cottage cheese in this casserole?
Not at all. Once blended and baked, cottage cheese becomes smooth and creamy, creating a texture very similar to ricotta while adding extra protein.
Is this casserole good for meal prep?
Yes. It’s one of my favorite meal-prep dinners because it reheats well and stays flavorful for several days in the refrigerator.
Can I make this with Italian sausage instead of ground beef?
Absolutely. Low carb pizza casserole with Italian sausage gives the casserole a richer, slightly spicier pizza flavor that’s perfect for meat lovers.
Can I add cauliflower?
Yes. Roasted cauliflower florets or riced cauliflower blend nicely into the casserole and add extra fiber without significantly increasing the carb count.
Can I make this in a crockpot?
Yes. To prepare a low carb pizza casserole crockpot version, layer the ingredients in a slow cooker and cook on LOW for 3 to 4 hours, until the cheese is fully melted and the casserole is heated through.
Cook’s Tip
For the best pizza flavor, allow the casserole to rest for about 5–10 minutes before serving. This helps the cheese set properly and makes each slice hold together much better. A sprinkle of fresh basil and Parmesan just before serving also adds restaurant-quality flavor with almost no extra effort.
Conclusion
If you’re looking for a comforting dinner that supports your high-protein or low-carb lifestyle, this High Protein Low Carb Pizza Casserole with Cottage Cheese is a recipe worth keeping on repeat. It delivers everything people love about pizza—savory meat, rich sauce, gooey cheese, and classic Italian flavors—without the traditional crust.
Whether you choose ground beef, Italian sausage, or even add roasted cauliflower, the recipe is flexible enough for busy weeknights and meal prep alike. One pan, simple ingredients, and plenty of protein make this casserole a dependable family favorite that you’ll find yourself making again and again.
High Protein Low Carb Pizza Casserole with Cottage Cheese
Equipment
- 9×13 inch baking dish
- Blender or food processor
- Large skillet
- Mixing bowl
- Wooden spoon
- Measuring cups and spoons
- Oven
Ingredients
- 1 lb lean ground beef or Italian sausage
- 1½ cups cottage cheese
- 4 oz cream cheese optional
- 1 cup low-sugar marinara sauce
- 1½ cups shredded mozzarella cheese
- ½ cup grated Parmesan cheese
- ½ cup pepperoni slices
- ½ cup diced bell peppers
- ½ cup sliced mushrooms
- ¼ cup diced onion
- 2 tsp Italian seasoning
- 1 tsp garlic powder
- ½ tsp onion powder
- ¼ tsp crushed red pepper flakes optional
- Salt and black pepper to taste
Instructions
- Brown the ground beef with onions, peppers, mushrooms, and seasonings.Blend the cottage cheese until smooth and mix in cream cheese if using.Spread the cottage cheese mixture into a baking dish, then layer with cooked meat, marinara sauce, pepperoni, mozzarella, and Parmesan.Bake at 375°F (190°C) for 20–25 minutes until the cheese is melted and golden.Rest for 5–10 minutes before serving.
