Bake garlic bread per package directions and set aside.
Change oven temperature to 350 F. Spray a 9×13 baking dish with cooking spray.
In a small bowl, mix together cream cheese, mayonnaise, and Italian seasoning until thoroughly mixed.
Line bottom of baking dish with layer of cooked garlic bread. Sprinkle 1 cup of mozzarella cheese on top of the bread, follow with cream cheese mixture. Cover with pasta sauce. Arrange frozen meatballs on the sauce and then top with remaining mozzarella cheese.
Bake dish, uncovered, for 30 minutes or until cheese has melted and meatballs are hot.