Bubble-Up Pizza Casserole

A pizza casserole with a crusty, cheesy topping of dough that “bubbles up” above the filling as it bakes.

Underneath the mozzarella-topped crust is a mixture of sausage or ground beef, bell peppers, onion, garlic, fresh tomatoes and spicy tomato sauce. Plus more stringy mozzarella cheese.

The dough for the crust is a lot easier to make than a true pizza crust. It’s a simple egg and flour batter that is poured on top of the filling. It’s soft and doughy in the middle and crispy around the edges and top just like a real pizza pie.

The filling is extremely versatile making it easy to add in your favorite pizza toppings.

While it won’t replace a regular pizza in my heart it is a nice change of pace and a unique twist on pizza with all those familiar flavors that I love.

Bubble-Up Pizza Casserole

Rating: 51

Prep Time: 25 minutes

Cook Time: 45 minutes

Total Time: 1 hour, 10 minutes

Yield: serves 4

Bubble-Up Pizza Casserole

A pizza casserole with a crusty, cheesy topping of dough that “bubbles up” above the filling as it bakes.


1 pound Italian sausage (links or ground) or ground beef
1 large yellow onion, chopped
1 large green bell pepper, chopped
3 cloves garlic, minced
1 cup fresh tomatoes, chopped
1 teaspoon dried oregano, crushed
1 teaspoon dried thyme
sea salt and fresh black pepper
1 + ½ cups tomato sauce (I use arrabiata)
1 cup milk
2 eggs
1 tablespoon vegetable oil
1 cup all-purpose flour
1/2 teaspoon salt
butter, for greasing pan
2 cups mozzarella cheese, shredded
Parmesan cheese, grated, for serving
pepperoni slices for the top, optional


  1. Preheat oven to 425 degrees F. In a large skillet cook sausage or ground beef over medium heat until brown; remove from pan and drain off all but a tablespoon or so of fat.
  2. Add onion and peppers cook about 5 minutes; add garlic; cook until fragrant; add tomatoes, oregano and thyme; season well with salt and pepper. Cook 3-4 minutes longer.
  3. If using link sausage slice into bite size pieces and set aside a few for the top (unless using pepperoni). Add sausage (or beef) back to the pan along with the tomato sauce. Bring to a simmer and cook 10 minutes. Taste and season as needed.
  4. Meanwhile in a large mixing bowl beat milk, eggs and oil together on medium speed for about 1 minute. Add flour and salt; beat for 2 more minutes.
  5. Grease a 9x13 baking pan, add the sausage mixture and spread out in an even layer. Sprinkle 1 cup of mozzarella over top. Pour the batter carefully all over the top to reach about a 1/2 inch from the top, discard any excess batter. Sprinkle with remaining cup of cheese and dot the top with pepperoni or the sausage slices set aside earlier.
  6. Bake, uncovered, with a thin sheet pan one rack below for catching dripsfor about 30 minutes or until puffed, golden and set in the middle. Let set for 5 minutes before serving with parmesan cheese.


Adapted from Recipe.com


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  1. Jessen says

    Great Idea! I’ve tried a cornbread topped casserole before, and it was a disaster! Tasted good, but the presentation was a complete mess. This looks more put together! Have a Great Weekend =)

  2. says

    It’s always nice to try out new variations.. bubble-up pizza casserole is something different than the usual pizza..will try it out.

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