low carb pizza casserole

This low carb pizza casserole delivers all the bold, satisfying flavor of pizza night without a single scrap of dough. I still remember the first time I threw this together: it was a chilly Tuesday evening, I had a pound of ground beef thawing on the counter and no real plan. That is when the best recipes are born.

Back on the farm, my grandmother never wasted a thing. She would look at what was on hand, a block of cream cheese, a jar of tomato sauce, some pepperoni tucked in the back of the fridge, and turn it into something that made the whole kitchen smell like pure comfort. That is the spirit behind this dish. It is humble in its ingredients, generous in its flavor, and the kind of meal that makes everyone lean in a little closer when you set it on the table. Your kitchen is about to smell incredible.

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Why This Low Carb Pizza Casserole Belongs in Your Recipe Box

Nonna Betty has always believed that the best recipes are not just delicious, they are dependable. This low carb pizza casserole is exactly that: a dish you can count on whether it is a rushed weeknight or a laid-back Sunday with family gathered around.

• Uses simple, everyday ingredients you likely already have in your fridge and pantry, no specialty store required.
• Comes together in just 35 minutes, making it one of the most practical keto dinner options for busy evenings.
• Completely crustless, so it naturally fits low-carb and keto lifestyles without feeling like a compromise.
• Endlessly customizable: swap toppings, add veggies, or change the protein to make it your own every single time.
• Reheats beautifully, so leftovers taste just as good the next day, making it ideal for meal prep.
• Crowd-pleasing flavor that satisfies even the pickiest eaters. Nobody misses the crust when the cheese is this good.

Key Players in This Recipe

Understanding your ingredients makes you a better cook, and Nonna Betty will tell you that every single item in this casserole earns its place.

Lean ground beef (1 lb, 85/15) forms the hearty, protein-rich base of this dish. I always choose 85/15 because it has just enough fat to stay juicy and flavorful without making the casserole greasy.

Pepperoni slices (8 oz) are the star topping that makes every bite taste unmistakably like pizza. Layer them on top so the edges crisp up in the oven, just like a real pizza fresh from the oven.

Cream cheese (8 oz, softened) is the secret to the rich, velvety filling. In my kitchen, I always let it sit at room temperature for at least 30 minutes. Cold cream cheese will not blend smoothly into the beef.

Shredded mozzarella (2 cups) delivers that irresistible, gooey cheese pull. Freshly shredded from the block melts more evenly than pre-shredded bags.

Low-sugar pizza sauce (1 cup) ties all the flavors together with that familiar tomato tang. Check the label carefully. Some jarred pizza sauces hide surprising amounts of sugar that can add up fast on a low-carb plan.

Diced bell peppers (1 cup) add color, a touch of natural sweetness, and a gentle crunch. Any color works. A mix of red and yellow gives the casserole a vibrant, inviting look.

Italian seasoning (1 tsp, optional) is a small addition that makes a big difference. That classic blend of oregano, basil, and thyme gives this casserole its true pizza-night aroma.

How to Make Low Carb Pizza Casserole

Step 1. Preheat your oven to 375 degrees F and lightly grease a 9×13-inch baking dish. A well-greased dish makes cleanup easier and keeps the edges from sticking.

Step 2. Brown the ground beef in a large skillet over medium heat, breaking it apart as it cooks. Drain thoroughly using a paper towel-lined colander. This one step keeps the casserole from turning watery.

Step 3. Return the drained beef to the skillet off the heat. Stir in the softened cream cheese and pizza sauce until fully combined into a smooth, creamy mixture. Mixing off the heat prevents the sauce from scorching while the cream cheese melts in smoothly.

Step 4. Spread the beef mixture evenly across the bottom of your prepared baking dish. Use the back of a spoon to make sure every corner is covered.

Step 5. Layer the diced bell peppers over the beef, then add all 2 cups of shredded mozzarella. Tucking the mozzarella under the pepperoni gets it extra gooey underneath while the edges bubble and crisp on top.

Step 6. Finish with pepperoni slices arranged in an even layer. This is when this low carb pizza casserole really starts looking like the real deal.

Step 7. Bake uncovered at 375 degrees F for 20 to 25 minutes, until the cheese is fully melted, bubbling, and just turning golden around the edges.

Step 8. For a crispier, more golden top, switch the oven to broil for the last 2 minutes. Watch it closely since it can go from golden to overdone quickly.

Step 9. Let the casserole cool for at least 5 minutes before slicing. This resting time helps everything set so your slices hold together beautifully on the plate.

Keeping This Casserole Fresh

Leftovers from this dish are something to look forward to, and Nonna Betty makes sure none of it goes to waste.

In the refrigerator: Store leftovers in an airtight container for up to 4 days. Transfer individual portions into smaller containers right after dinner so they are grab-and-go ready for the next day. The flavors deepen overnight, making each reheated serving arguably better than the first.

In the freezer: This casserole freezes well, either baked or unbaked. Wrap the dish tightly in plastic wrap, then a layer of foil, and freeze for up to 2 months. If freezing unbaked, thaw overnight in the refrigerator before baking as directed, adding 5 to 10 extra minutes to the cook time.

Reheating: For the best texture, reheat slices in a toaster oven at 350 degrees F for 10 to 12 minutes to revive that bubbly, slightly crispy top. The microwave works too in 45-second intervals until hot. An air fryer at 350 degrees F for 5 to 6 minutes is ideal for small portions when you want that fresh-from-the-oven feel.

Perfect Partners for This Dish

Since this casserole is rich and deeply savory, pairing it with something fresh and light creates a beautifully balanced meal.

• Garlic butter green beans are quick to make and the buttery, garlicky flavor complements the cheesy casserole perfectly. Try this easy honey glazed carrots and green beans for a slightly sweeter twist your family will love.
• Simple mixed green salad dressed with olive oil, red wine vinegar, and a pinch of oregano adds freshness and crunch to balance the richness.
• Roasted vegetables are low-carb sides that feel right at home alongside a keto dinner. These crispy garlic Parmesan Brussels sprouts are a standout option that the whole family enjoys.
• Zucchini noodles lightly sauteed in olive oil and herbs soak up the savory juices from the bottom of the pan beautifully.
• If you love the pizza flavors in this dish, you will also enjoy this hot honey pepperoni pizza for your next pizza night, or this pizza style cottage cheese bake for an ultra high-protein crustless variation.
• For another satisfying low-carb casserole on a busy night, this easy low carb Tuscan chicken is a reliable weeknight favorite worth bookmarking.

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