Filling: * 3 oz pkg. vanilla pudding & pie -filling mix * 1 1/2 cup evaporated skim milk * 1/2 cup skim milk * 1/3 cup Sugar * 1 tsp molly mcbutter * 1/2 tsp vanilla extract * 1/3 cup fat-free sour cream * 3 large bananas, sliced Topping: * 1/4 cup graham cracker crumbs * 2 tbsp Sugar