1 large pkg. vanilla pudding (8 oz. sugar-free/fat-free)
2 1/2 c. skim milk
1 (8 oz.) no-fat sour cream
1 box reduced-fat vanilla wafers
3 bananas

Mix together pudding, milk and sour cream. Layer Pyrex dish with cookies, pudding and then bananas with pudding as top layer. Garnish with Cool Whip if desired.