Pizza night just got a low-carb upgrade. Whether you’re cutting back on carbs, following a ketogenic lifestyle, or just looking for a more wholesome take on a family favorite, this Low Carb Pizza Casserole is a cheesy, savory, utterly satisfying dish that won’t leave you missing the crust. Loaded with hearty meat, colorful veggies, and all your favorite pizza toppings, this casserole is a weeknight winner and a meal-prep hero in one.
Why You’ll Love This Recipe
This recipe is for anyone who wants to enjoy the flavors of classic pepperoni pizza without the extra carbs and guilt. It’s a brilliant solution for busy parents, meal-prep enthusiasts, or anyone looking for a hearty, low-effort dinner that satisfies all the cravings without compromising your goals.
With just one casserole dish and a few simple steps, this dish comes together quickly, and the result is bubbling, golden, cheesy goodness you’ll return to again and again. Plus, it’s keto-friendly, gluten-free, and easily customizable for the pickiest of eaters.
Ingredients You’ll Need
Here’s everything that goes into making this delicious low-carb pizza casserole:
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1 lb ground beef
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1/2 lb Italian sausage
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1/2 cup chopped onion
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2 cloves garlic, minced
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1 1/2 cups low-carb marinara sauce
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1/2 tsp dried oregano
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1/2 tsp dried basil
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1/4 tsp red pepper flakes (optional for a spicy kick)
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1 cup sliced mushrooms
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1/2 cup sliced black olives
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1/2 cup chopped green bell pepper
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2 cups shredded mozzarella cheese
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1/2 cup grated Parmesan cheese
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12–15 slices of pepperoni
This recipe is wonderfully adaptable—perfect for using up whatever pizza-friendly ingredients you have in the fridge.
Kitchen Equipment Needed
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Large skillet
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9×13-inch casserole dish
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Wooden spoon or spatula
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Cutting board & knife
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Cheese grater (if using block cheese)
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Oven mitts
Step-by-Step Instructions
1. Preheat & Prep
Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch casserole dish with oil or non-stick spray to prevent sticking.
2. Cook the Meat Mixture
In a large skillet over medium heat, cook the ground beef, Italian sausage, and chopped onion until the meat is browned and the onion is soft—about 7–10 minutes. Be sure to drain any excess grease to keep the casserole from getting greasy.
3. Add Flavor
Stir in the minced garlic and cook for another minute until fragrant. Then mix in the low-carb marinara sauce, oregano, basil, and red pepper flakes if using. Let the mixture simmer for 5 minutes, allowing all the flavors to meld.
4. Add the Veggies
Toss in the sliced mushrooms, black olives, and green bell pepper. Stir well to combine. Once everything is heated through, remove the pan from the heat.
5. Layer the Casserole
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Spread half of the meat and veggie mixture into your prepared casserole dish.
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Top with 1 cup of mozzarella and half the Parmesan.
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Layer the remaining meat mixture on top, followed by the rest of the mozzarella and Parmesan cheese.
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Finally, arrange the pepperoni slices evenly over the top.
6. Bake
Place the casserole uncovered in the oven and bake for 20–25 minutes, or until the cheese is bubbly and golden brown.
7. Let It Rest
Remove from the oven and let the casserole rest for 5 minutes before slicing and serving. This allows everything to set and makes serving easier.
Storage & Reheating Tips
This dish is meal-prep friendly and stores well:
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Refrigerator: Store leftovers in an airtight container for up to 4 days.
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Freezer: Freeze in individual portions for up to 3 months. Wrap tightly with foil and place in a freezer-safe bag.
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To Reheat: Warm in the microwave for 1–2 minutes or reheat in a 350°F oven until hot and bubbly.
Substitutions & Variations
Make this casserole your own with these easy swaps:
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Vegetarian Version: Omit the meat and use plant-based crumbles or extra veggies like zucchini, eggplant, or spinach.
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Different Meats: Try ground turkey, chicken sausage, or even bacon for a twist.
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Cheese Lovers: Mix in provolone, gouda, or smoked cheddar for a flavor boost.
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Spice It Up: Use hot Italian sausage and add extra red pepper flakes for more heat.
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Crust-Like Base: For a more pizza-esque base, layer a thin slice of grilled eggplant or cauliflower before the meat mixture.
Food & Drink Pairings
Complete your meal with these low-carb sides and drinks:
Sides:
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Zucchini noodles tossed in olive oil
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Caesar salad with a keto-friendly dressing
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Roasted broccoli or asparagus
Drinks:
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Dry red wine like Cabernet Sauvignon or Pinot Noir
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Sparkling water with lemon or lime
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Unsweetened iced tea
This casserole also makes a fantastic party or potluck dish, as it feeds a crowd and holds up well when reheated.
Frequently Asked Questions (FAQs)
Q: Is this casserole keto-friendly?
Yes! Each serving is low in net carbs and packed with protein and fats, making it ideal for a ketogenic diet.
Q: Can I make this ahead of time?
Absolutely. You can assemble the casserole up to 24 hours in advance, store it covered in the fridge, and bake it just before serving.
Q: Can I use store-bought marinara sauce?
Yes, but make sure it’s low in sugar and carbs. Look for sauces with 4g net carbs or less per serving.
Q: What’s the best way to freeze this casserole?
Let the casserole cool completely, then wrap tightly in foil or plastic wrap. Freeze the whole dish or divide it into portions for quick weekday meals.
Q: How many servings does this make?
This recipe makes 6–8 generous servings, depending on your portion size.
Final Thoughts
This Low Carb Pizza Casserole is everything you love about pizza—melty cheese, savory meats, zesty marinara, and satisfying toppings—all baked into a comforting, carb-conscious casserole. It’s quick to prep, easy to customize, and absolutely delicious.
If you’re trying to eat healthier without giving up your favorite flavors, this recipe is your new go-to. Whether it’s a cozy family dinner or meal prep for the week, this casserole delivers every time.
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Happy cooking! 🍕✨