1 lg. box sugar-free Jello vanilla pudding instant
3 to 4 ripe bananas
1 lg. tub Cool Whip
1 box vanilla wafers

Layer vanilla wafers and bananas in bowl. Mix pudding according to directions. Blend pudding and one half whipped topping together. Pour over bananas and wafers. Put other half topping on top of pudding. Best if fixed day ahead.