Slow Cooker Pizza Casserole

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We all have busy days and being able to throw something in the crockpot and forget about it is such a convenience. This Pizza casserole is super easy, it cooks fast for a slow cooker meal and the kids will love it. Gluten-free and it’s also Keto if you use a low/no sugar sauce.

I browned the meat before adding it to the crock pot but you don’t have to. You can use raw burger, it needs to be really lean or it will add a lot of grease to the dish. Break it up really well and you will need to add an hour to the cooking time. I do not recommend using raw meat if you are using a programmable crockpot that will be set to start cooking at a later time.

In a skillet, brown 2 pounds of lean ground meat with 1/2 chopped onion and 1 tsp dried oregano (or Italian seasoning). Add garlic pepper seasoning (salt and pepper) to taste. Pour off any grease that has formed. Add 1 jar of spaghetti sauce (pizza sauce, marinara sauce, or 2 cans of diced tomatoes will also work). Spread the meat mixture in the bottom of a 5-6 quart crockpot (or a casserole crockpot). I always use Reynold’s Slow Cooker Liners for easy clean up, but you could spray the slow cooker with non-stick spray before adding the meat if you’d rather.

Cover the meat mixture with 2 cups of Mozzarella cheese, you could also use provolone or Italian cheese. I added a 3-ounce pack of pepperoni and black olives with more cheese sprinkled on top. You can add any of your favorite toppings, cover and cook on low for 4 hours or on high for 2 hours.

Sprinkle on some Parmesan cheese or red pepper flakes before serving if you like. Serve with fresh veggies, a salad, or garlic bread.

Slow Cooker Pizza Casserole

Prep Time15 minutes
Cook Time4 hours
Servings: 8
Calories: 417kcal


  • Slow Cooker


  • 2 lb ground beef
  • ½ chopped onion
  • 1 tsp oregano or Italian seasoning
  • 1 tsp garlic pepper seasoning (or salt and pepper)
  • 1 jar spaghetti sauce
  • cups shredded mozzarella cheese
  • your favorite pizza topping


  • Brown the ground beef with onion and seasonings. Drain off any grease that has formed. Mix in the spaghetti sauce.
  • Spread the meat mixture in the bottom of a lined or sprayed 5-6 quart slow cooker.
  • Layer 2 cups of shredded mozzarella cheese over the top of the meat mixture. Add your favorite toppings and the other 1/2 cup of mozzarella.
  • Cook on low for 4 hours or on high for 2 hours.


Serving: 1g | Calories: 417kcal | Carbohydrates: 6g | Protein: 28g | Fat: 31g | Saturated Fat: 13g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 12g | Trans Fat: 1g | Cholesterol: 108mg | Sodium: 699mg | Potassium: 602mg | Fiber: 2g | Sugar: 4g | Vitamin A: 610IU | Vitamin C: 6mg | Calcium: 216mg | Iron: 3mg
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