~Jiffy Banana Pudding~

I came across this recipe in a cookbook probably more than 10 years ago. It is supposedly the recipe of Barbara Mandrell's mother.This is the best banana pudding ever!

1 1/2 C. cold milk
1(3oz) box vanilla instant pudding mix
4 oz. sour cream
1T. vanilla
8oz. tub Cool Whip
1 box vanilla wafers
4 bananas, sliced

In a bowl, beat milk and pudding mix until smooth. Add Cool Whip, sour cream, and vanilla and continue to beat until thoroughly mixed.
Layer in casserole dish as follows: vanilla wafers, bananas, and pudding. Repeat; finishing with pudding on top.
Sprinkle top with wafer crumbs.
Chill 2 1/2 hours and serve.