2 lg. pkgs. Jello instant vanilla pudding
1 (12 oz.) Cool Whip
1 (8 oz.) sour cream
3 c. milk
1 box vanilla wafers
3 lg. bananas

Mix pudding and milk until thick. Add sour cream and Cool Whip; mix well. In a 9 x 13 inch dish put a layer of pudding, layer of wafers, another layer of pudding, layer of bananas, sliced to your pleasure, another layer of pudding. Top with wafer crumbs. Refrigerate.