5 c. milk
3 sm. pkg. instant vanilla pudding
1 med. Cool Whip (save half)
8 oz. sour cream
1 box vanilla wafers
5 lg. bananas

Mix pudding with milk. Mix sour cream and half of Cool Whip together. Add this mixture to pudding mixture. Layer vanilla wafers, bananas, and pudding mixture. Spread other half of Cool Whip on top.