(from Dump Dinners)
1 bag frozen meatballs
½ lb. pasta, such as penne or rigatoni, cooked according to package directions
3 cups marinara sauce
2 cups shredded mozzarella cheese
Preheat oven to 350 degrees. Spray a 9×13 casserole dish with cooking spray.
Layer the meatballs, pasta, and marinara sauce with half the cheese.
Cover and bake for 45 minutes, until meatballs are heated through.
Uncover, top with remaining cheese and bake for 10 more minutes, or until cheese is browned and bubbly.