Description
Supreme Pizza Bubble Up is a cheesy, bubbly biscuit-based casserole packed with toppings—an easy weeknight dinner everyone loves.
Ingredients
Scale
Meat
- ½ pound Italian sausage, casing removed (sweet or spicy)
Base
- 32.6 ounces refrigerated biscuits (see note)
Sauce
- 14 ounces pizza sauce
Cheese
- 8 ounces mozzarella cheese, shredded
Toppings
- 3 ounces pepperoni slices
- ½ cup green bell pepper, cored and chopped
- ½ cup white onion, peeled and chopped
- ½ cup button mushrooms, cleaned and chopped
- 2.25 ounces canned black olives, drained
Instructions
- Cook the Sausage
In a skillet over medium heat, cook Italian sausage until browned. Break into crumbles. Drain grease and set aside. - Prepare the Biscuits
Preheat oven to 350°F. Cut each biscuit into quarters to help them “bubble up” evenly in the casserole. - Mix the Base Layer
In a large mixing bowl, combine biscuit pieces with pizza sauce, cooked sausage, half the mozzarella, half the pepperoni, bell pepper, onion, mushrooms, and olives. Stir until everything is coated. - Transfer to Baking Dish
Spray a 9×13-inch baking dish with nonstick spray. Pour the mixture in and spread evenly. - Top With Remaining Ingredients
Sprinkle remaining mozzarella and pepperoni on top. - Bake the Casserole
Bake uncovered for 30–40 minutes or until biscuits are puffed, cooked through, and the cheese browns slightly. - Rest Before Serving
Allow to cool for 5–10 minutes so the casserole can set before cutting.
Notes
If your biscuits are very large, cut them into sixths instead of quarters.
Avoid adding raw vegetables that contain excess moisture (like tomatoes) unless drained.
Use spicy sausage for extra heat or mild for family-friendly flavor.
Check the center of the casserole to ensure the biscuits are fully cooked—raw dough will look streaky or gummy.