Low Carb Pizza Casserole
This low carb pizza casserole combines all the comforting flavors of pizza in a hearty bake, using cauliflower rice instead of crust for a delicious and satisfying meal.
I still remember the first time I turned pizza into a casserole—warm, cheesy, and low on carbs, it felt like comfort food that actually fit my weeknight routine. This version swaps a traditional crust for cauliflower rice and layers familiar pizza flavors into an easy bake, so you get all the satisfaction of pizza without the heavy carbs. If you’re testing low-carb dinners that please picky eaters and clean up fast, see this low carb pizza casserole guide for a similar approach.
Why you’ll love this dish
This casserole is where cozy meet practical: it’s fast to assemble, budget-friendly, and family-approved. The ground beef and beef pepperoni deliver the meaty pizza notes, while cauliflower rice keeps carbs down and sneaks in extra veggies for anyone who might balk at a green side. It’s perfect for busy weeknights, potlucks, or when you want something that reheats beautifully for lunches.
Beyond comfort, it’s a smart one-pan-ish meal that scales well and freezes tightly, which makes it an ideal meal-prep candidate.
Step-by-step overview
Before launching into ingredients, here’s what you’ll do at a glance:
- Brown the beef, season it, and stir in marinara.
- Mix in riced cauliflower and some cheese.
- Spread the mixture in a baking dish and top with more cheese and beef pepperoni.
- Bake until golden and bubbly, rest briefly, then serve.
This short roadmap helps you move confidently through the recipe without surprise steps mid-cook.
What you’ll need
- 1 pound ground beef (80/20 is what the nutrition numbers are based on; leaner beef works too)
- 1 cup beef pepperoni slices
- 2 cups cauliflower rice (store-bought or homemade)
- 1 cup shredded mozzarella cheese, plus 1 cup for topping (total 2 cups)
- 1 cup marinara sauce (pick a no-sugar-added brand for lower carbs)
- 1 teaspoon Italian seasoning
- Salt, to taste
- Black pepper, to taste
Notes/substitutions:
- Swap ground beef for ground turkey or chicken for a lighter protein.
- Use frozen cauliflower rice—just thaw and squeeze out excess moisture for best texture.
- For a dairy-free option, try shredded dairy-free cheese and omit or replace mozzarella with a creamy cashew sauce.
Step-by-step instructions
- Preheat your oven to 350°F (175°C).
- Heat a large skillet over medium. Add the ground beef and cook, breaking it apart, until fully browned and no longer pink (160°F / 71°C inside).
- Drain excess fat from the skillet. Return to heat and stir in the marinara sauce and Italian seasoning. Season with salt and black pepper to taste.
- Add the cauliflower rice to the saucy beef and stir until evenly combined. Fold in half of the shredded mozzarella so it starts to melt into the mix.
- Transfer the mixture into a lightly oiled 9×9-inch (or similar) baking dish and spread it into an even layer.
- Sprinkle the remaining mozzarella over the top, then arrange the beef pepperoni slices evenly.
- Bake for 25–30 minutes, until the cheese is bubbly and edges are golden.
- Let the casserole rest for 5 minutes before cutting and serving—this helps it set so portions hold together.
These short, action-focused steps keep the process quick and prevent over-handling.
01Ingredients
Main Ingredients
02Method
- Preparation
- Baking
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0 OF 8 DONE03Recipe notes
- 01For a lighter protein, you can swap ground beef for ground turkey or chicken. Also, for a dairy-free option, try shredded dairy-free cheese and omit or replace mozzarella with a creamy cashew sauce.
04Nutrition
Per serving- Calories
- 393
- Protein
- 27G
- Net carbs
- 7G
- Fat
- 28G
- Fiber
- 2G
Net carbs are total carbs minus fiber. Numbers are estimates from the ingredients listed.
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Best ways to enjoy it
Serve this casserole straight from the dish with a simple green salad for freshness. Try:
- A peppery arugula salad with lemon vinaigrette to cut the richness.
- Roasted broccoli or a side of sautéed mushrooms for extra veggies.
- A light drizzle of chili oil or crushed red pepper for those who like heat.
If you enjoy hearty bakes, you might also like the crowd-pleasing cheesy husband casserole as another weeknight favorite.
Storage and reheating tips
Refrigeration: Cool to room temperature, cover tightly, and refrigerate for up to 3–4 days.
Reheating: Reheat single portions in the microwave for 60–90 seconds, or warm a casserole portion in a 350°F oven for 10–15 minutes until heated through.
Freezing: Freeze baked, cooled portions in airtight containers for up to 2 months. Thaw overnight in the fridge before reheating in the oven.
Food safety: Do not leave the casserole at room temperature for more than 2 hours. Reheat leftovers to an internal temperature of 165°F (74°C) for safety.
Recipe variations
- Veggie-forward: Add sautéed bell peppers, onions, or mushrooms to the beef mix for greater volume and flavor.
- Vegetarian: Replace ground beef with a plant-based crumbled “beef” substitute and use vegetarian beef pepperoni or extra veggies.
- Spice it up: Mix in chopped banana peppers or jalapeños and swap Italian seasoning for a pinch of smoked paprika.
- Extra-crusty top: Mix 1/4 cup grated Parmesan into the top layer of mozzarella for a more golden, savory crust.
These variations keep the core idea intact while changing textures and flavor profiles.
Common questions
How long does this take from start to table?
Plan about 10–15 minutes of active prep, 25–30 minutes baking, and 5 minutes resting—roughly 40–50 minutes total.
Can I use fresh cauliflower instead of riced cauliflower?
Yes. Chop a head of cauliflower into florets and pulse in a food processor until rice-sized. Sauté briefly to remove excess water before mixing into the beef.
Is this freezer-friendly?
Absolutely. Bake, cool completely, then freeze in portions for up to 2 months. Thaw in the fridge overnight before reheating.
Can I make this dairy-free or lower in cheese?
Use dairy-free shredded cheese or reduce the quantity; the casserole will be less gooey but still flavorful. Adding an extra egg or a little mashed cauliflower helps bind if you cut back on cheese.
How can I make it crispier on top?
Finish under the broiler for 1–2 minutes or add a sprinkle of grated Parmesan before broiling.
Conclusion
This Low Carb Pizza Casserole gives you that pizza-night comfort with fewer carbs and less fuss—ideal for busy nights and simple leftovers. For more ideas, check out Keto Pizza Casserole from All Day I Dream About Food and my Easy Spaghetti Squash Meatball Casserole.
Breakfast
Casseroles
Casseroles
