Meatball Sub Casserole This Meatball Sub Casserole has been in our monthly dinner rotation for some time now. It’s super easy, requires very little ingredients and taste like the best meatball sub you have ever had. Ingredients: French bread, Butter or margarine, Garlic salt, Cream cheese, Mayonnaise, Italian seasoning, Italian meatballs, Hunts Spaghetti Sauce and Mozzarella cheese. I am a casserole lover. What’s not …