2 (3 oz.) pkgs. instant vanilla pudding
3 1/2 c. milk
1 (8 oz.) carton sour cream
1 carton Cool Whip
3-4 bananas
Vanilla wafers

Beat together the pudding mix, milk, and sour cream. When thick, add about half of the Cool Whip. Layer the pudding mix, vanilla wafers, and bananas. Put remaining Cool Whip on top. Refrigerate. This will keep several days.