Mac Cheese Pizza - 1 box shells cheese, 3 slices American Cheese, 1/4 cup milk, 1 premade pizza crust, 1/4 cup olive oil, 1/2 cup shredded cheese - Make macaroni cheese according to the package, 2.Add 3 slices of American cheese and 1/4 cup of milk to make a little more cheese sauce. Stir over low heat until melted. Brush pizza crust with olive oil. Top with macaroni and cheese. Sprinkle with shredded cheese. Bake at 450 degrees for 7-10 minutes.