2 (3.4 ounce) packages instant vanilla pudding mix
1 cup milk
1 (14 ounce) can sweetened condensed milk
1 (8 ounce) container sour cream
1 (8 ounce) container frozen whipped topping, thawed
6 bananas, sliced
1/2 (12 ounce) package vanilla wafers
Combine pudding mix and milk in a bowl and stir until mix is dissolved. Refrigerate 15 minutes, until partially set.
Pour and mix condensed milk into pudding mixture until smooth. Fold in sour cream and whipped topping. Fold in bananas.
Arrange a layer of vanilla wafers in the bottom of a 9x13 inch dish. Spread pudding evenly over wafers.
Crush remaining wafers and sprinkle on top. Refrigerate until serving.