Slow Cooker Pizza Casserole

All the flavors of pizza in a casserole, made in a slow cooker. There’s plenty of cheese and pepperoni so you can overlook the lack of a crunchy crust. The perfect one-pot meal on a rainy, cool late winter evening. You can make it more ‘your way’ by adding Canadian bacon, mushrooms, different cheeses… whatever you prefer.
Slow Cooker Pizza CasseroleBe careful to not overcook the pasta. Pasta is not the most slow cooker-friendly item in the world. If you over cook the pasta it will become mushy. Not happy mushy either. So error on the side of caution and serve this slow cooker pizza casserole as soon as the pasta is cooked. It’s sorta like my pizza pasta bake, but with a twist.

Also check out my slow cooker ravioli lasagna. It has all the flavors of lasagna in a simple slow cooker dish.

Slow Cooker Pizza Casserole

Course Main
Cuisine American
Prep Time 15 minutes
Cook Time 5 hours 30 minutes
Total Time 5 hours 45 minutes
Servings 6 -8 servings


  • 1 pound bulk Italian sausage
  • 1/2 medium sweet onion chopped
  • 2 cloves garlic minced
  • 1 28 ounce can crushed tomatoes
  • 1 cup water
  • 4 ounces sliced pepperoni divided
  • 1 small green bell pepper. chopped
  • 2 teaspoon dried oregano
  • 2 teaspoon Kosher salt
  • 1 teaspoon freshly ground black pepper
  • 2 cups mozzarella cheese shredded divided (plus more for garnish if desired)
  • 2 cups uncooked pasta
  • Freshly chopped parsley and freshly grated Parmesan for garnish if desired


  • Heat a large skillet over medium-high heat.
  • Crumble in the sausage and cook until almost done.
  • Add the onion and cook until the meat is completely done.
  • Add the garlic and cook for one more minute.
  • Transfer meat to a slow cooker set to low.
  • Stir in the tomatoes, water, all but 12 slices of the pepperoni, the oregano, salt, pepper, and 1 cup of the cheese. Mix well.
  • Add the pasta and stir.
  • Top with the remaining pepperoni and cheese and cover.
  • Cook for 5 hours and serve garnished with parsley, Parmesan and more mozzarella cheese.

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