Blend bananas with mixer adding sour cream. When mixture is well blended, not lumpy add cake mix, egg whites, oil, milk, and flavoring together and mix. Add milk last so you will be able to judge consistency of cake and adjust as needed.

Once well blended pour mixture into well greased 9x13 cake pan or 2 round cake pans.

Bake at 350° for about 25 mins or until cake springs bake when pressed. Do not over bake.

To make frosting mix cream cheese and butter together in a bowl.

Add powdered sugar and vanilla.

Mix until you get the consistency you like.

Add a little milk if u want the frosting creamier.