Low Carb Pizza Casserole

Low carb pizza casserole is the weeknight dinner I never knew I needed until I made it for the first time and my whole family asked for seconds. This dish delivers every classic pizza flavor you love, layered into a bubbling, cheesy casserole without a single gram of crust carbs.

I still remember throwing this together on a busy Tuesday night with ground beef in the fridge, a jar of pizza sauce in the pantry, and a serious craving for something warm and satisfying. What came out of that oven was pure comfort. The melted mozzarella, savory pepperoni, and rich cream cheese layer made this low carb pizza casserole taste indulgent without any of the guilt. It has become one of my most-made keto dinner recipes, and I know it will be one of yours too.

What You Need to Build This Cheesy Low Carb Pizza Casserole

I always recommend gathering everything before you start, because this recipe moves quickly once the meat hits the skillet. A few smart ingredient choices make a real difference here. Using a low-sugar pizza sauce is the single most important swap for keeping carbs in check.

• 1 pound ground beef or Italian sausage
• 1/2 cup onion, diced
• 1/2 cup bell pepper, diced – any color works, red adds a touch of natural sweetness
• 2 cloves garlic, minced
• 1 (24 ounce) jar low-sugar pizza sauce – check the label for under 5g sugar per serving
• 1 teaspoon Italian seasoning
• 1/2 teaspoon red pepper flakes (optional)
• 4 ounces cream cheese, softened – leave it on the counter for at least 30 minutes before starting
• 1 large egg
• 1/2 cup heavy cream
• 1 1/2 cups shredded mozzarella cheese, divided
• 1/2 cup grated Parmesan cheese
• 1/2 cup pepperoni slices

Pro tip: shredding your own mozzarella from a block melts better and gives you a stretchier, creamier top layer than pre-shredded bags, which contain anti-caking agents that prevent smooth melting.

How to Make Low Carb Pizza Casserole Step by Step

I recommend prepping your cream cheese mixture while the meat cooks so everything is ready to layer at the same time. This keeps the whole process smooth and avoids letting the meat mixture cool too long before it goes into the dish.

Step 1: Preheat your oven to 375 degrees F (190 degrees C). Grease a 9×9 inch baking dish and set it aside.

Step 2: In a large skillet over medium-high heat, cook the ground beef or Italian sausage until fully browned, about 8 to 10 minutes. Break it up as it cooks. Drain off any excess fat. Browning the meat well here builds a deeper, richer base flavor in your finished low carb pizza casserole.

Step 3: Add the diced onion and bell pepper to the skillet. Cook for 5 to 7 minutes until softened. Stir in the minced garlic and cook for one more minute. Your kitchen should smell incredible at this point.

Step 4: Stir in the low-sugar pizza sauce, Italian seasoning, and red pepper flakes if using. Let the mixture simmer uncovered for about 5 minutes so the sauce thickens slightly and coats all the meat. Do not skip the simmer. A watery sauce layer is the most common reason the casserole comes out too loose.

Step 5: While the sauce simmers, whisk the softened cream cheese, egg, and heavy cream together in a mixing bowl until completely smooth. If you see small lumps, keep whisking or use a hand mixer on low for 30 seconds. A smooth mixture is important so the topping layer sets evenly during baking.

Step 6: Spread the meat and sauce mixture evenly into your prepared baking dish. Pour the cream cheese mixture over the top in an even layer.

Step 7: Sprinkle 1 cup of the shredded mozzarella evenly over the top, then add the Parmesan. Arrange pepperoni slices across the surface. Reserve the remaining 1/2 cup of mozzarella – if you want an extra-melty cheese pull, scatter it over the casserole during the last 5 minutes of baking.

Step 8: Bake for 20 to 25 minutes. The casserole is done when it is bubbly around the edges and the cheese is melted and lightly golden on top. If the cheese browns before the casserole is bubbling, tent loosely with foil for the final few minutes.

Step 9: Let it rest for 5 minutes before serving. This allows the layers to firm up so your servings hold their shape on the plate.

Best Sides to Serve with Low Carb Pizza Casserole

This dish is hearty on its own, but the right side makes it feel like a complete meal. The best sides for low carb pizza casserole keep things light and fresh to balance the richness of all that cheese.

Simple Green Salad: A crisp romaine or arugula salad with lemon vinaigrette cuts through the richness of the cheese layer and refreshes your palate between bites.

Steamed Broccoli: Broccoli soaks up any extra pizza sauce on your plate and adds fiber and nutrients without adding carbs. A sprinkle of Parmesan on top makes it feel cohesive with the casserole.

Roasted Cauliflower: Cauliflower roasted with olive oil and garlic has a nutty, slightly caramelized flavor that pairs beautifully with the Italian seasoning in this dish.

Zucchini Noodles: If you want something that feels more like a full Italian dinner, a light bowl of zucchini noodles tossed in olive oil and garlic is a perfect low carb partner.

More Easy Dinners to Add to Your Weekly Rotation

If this low carb pizza casserole hit the spot, there are plenty of other satisfying weeknight recipes worth keeping close. The High Protein Chicken Alfredo Bake brings the same oven-baked comfort with a creamy, protein-packed twist, while the Cheesy Beef and Sausage Rigatoni is a hearty Italian-inspired option the whole table will love.

For nights when a lighter side is needed to balance a rich main dish, the Easy Grilled Chicken Broccoli Bowls and the Garlic Italian Broccoli Soup both pair beautifully with cheesy casseroles and round out the meal with fresh vegetables and bold Italian flavors.

Keeping Your Low Carb Pizza Casserole Fresh All Week

This casserole stores beautifully, which makes it one of the best keto meal prep recipes to have in your rotation. Portion it into individual containers right after it cools so you have easy grab-and-go lunches ready all week.

Store leftovers in an airtight container in the refrigerator for up to 4 days. For longer storage, freeze in a freezer-safe container for up to 3 months. Thaw overnight in the refrigerator before reheating.

To reheat, place a portion in the oven at 350 degrees F (175 degrees C) for 10 to 15 minutes, or microwave on medium power in 90-second intervals until warmed through. The oven method keeps the cheese from getting rubbery and gives you the best texture.

Pro tip: this low carb pizza casserole actually tastes even better on day two. The flavors deepen overnight in the fridge, making leftovers something worth planning for.

Frequently Asked Questions About Low Carb Pizza Casserole

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