3 boxes instant vanilla pudding
5 c. milk
1 sm. carton sour cream
1/2 of lg. Cool Whip
2 boxes vanilla wafer
8 bananas

Beat pudding and milk on low until pudding begins to set. Add sour cream; fold in Cool Whip. Alternate layers of vanilla wafers, bananas, and pudding mixture. Top with remaining Cool Whip and vanilla wafer crumbs. Serves 12-16.