1 (5 1/2 oz.) pkg. scalloped potatoes
1 (15 oz.) can tomato sauce
1 can water
1/2 can milk
1 lb. Mozzarella, diced
1 lb. pepperoni, diced
1 lg. cooked sausage, optional, diced

Combine all ingredients including cheese packet from potatoes into large casserole dish. Mix well. Bake at 350 degrees for 30-35 minutes. Stir occasionally. If casserole seems thick, add a few teaspoons milk to make creamy. Serves 4-6.