You may use 2 boxes instant pudding of either the Vanilla, Banana Cream or French Vanilla Flavors. 

Or you may mix and match if you feel adventurous!

3 cups Cold Milk

1 small carton of sour cream

Mix well the above ingredients.

Layer vanilla wafers and bananas repeating until all ingredients are used.

You can put Whipped Cream on Top or Cool Whip if desired.