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Easy Meatball Sub Bubble Up Bake

Frozen meatballs, marinara, refrigerated biscuits, and mozzarella bake together for an easy casserole inspired by a classic meatball sub. This family-friendly dinner serves about six people and takes approximately 45 to 50 minutes from start to finish.
Print Recipe
Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings: 6 servings
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 1 package (14–16 ounces) Frozen, fully cooked Italian-style meatballs
  • 1 jar (24 ounces) Marinara or pasta sauce
  • 1 can (16.3 ounces) Refrigerated large biscuits, such as Pillsbury Grands!
Cheese and Seasoning
  • 1 1/2 to 2 cups Shredded mozzarella cheese
  • 1/4 cup Grated Parmesan cheese
  • 1/2 teaspoon Italian seasoning
Garnish
  • As desired Fresh parsley, chopped

Method
 

Step-by-Step
  1. Heat the oven to 375°F and lightly grease a 9-by-13-inch baking dish. Add the frozen, fully cooked meatballs and marinara sauce to the dish, then stir gently so the meatballs are coated.
  2. Separate the biscuits and cut each one into quarters or eighths. Toss the biscuit pieces with some of the sauce, or arrange them evenly over the sauced meatballs so they are spread out rather than tightly packed.
  3. Cover the casserole with about 1 cup of shredded mozzarella. Sprinkle the Parmesan and Italian seasoning over the top if using.
  4. Bake uncovered for 30 to 35 minutes, until the biscuits are puffed, golden brown, and cooked through in the center and the meatballs are hot. If the biscuit tops brown too quickly, loosely cover the dish with foil and continue baking.
  5. Sprinkle the remaining mozzarella over the baked casserole and return it to the oven for 3 to 5 minutes, until the cheese is melted. Rest the casserole for about 5 minutes, garnish with parsley if desired, and serve hot.

Notes

Cut the biscuits fairly small and spread them out to help the centers bake fully. Use refrigerated or thawed fully cooked meatballs rather than raw meatballs. Refrigerate leftovers in a covered container and reheat individual portions until hot.