Preheat oven to 350°. Prepare (3) 8” pans by spraying with cooking oil spray and flour lightly.
Whisk together dry ingredients in bowl and set aside.
Mash bananas and set aside.
Separate eggs. Add egg whites to mixer and whip up the egg whites until stiff peak, remove from mixing bowl and set aside.
BATTER
Add to mixer, the butter and sugar and cream together until light and fluffy.
Add in the egg yolks and vanilla and mix .
Add the dry ingredients and mix until just combined.
Add the buttermilk and mix until just combined.
Fold in the whipped egg whites and stir by hand into the cake batter.
BAKE
Pour batter into greased cake pans up to 2/3 full.
Bake at 350° for 35-40 minutes or until toothpick in center comes out clean.
FROSTING
In a mixer, cream together cream cheese and butter until light and fluffy.
Add confectioners' sugar and vanilla. Beat together about 5 minutes.
ASSEMBLE CAKE
Slide a knife or spatula around cake to release from the sides. Turn cake out onto a piece of parchment paper.
Place one layer on cake plate and frost using an off-set spatula or pipe frosting using a piping bag around the perimeter of the cake and then fill in the center. Repeat this and add second layer on top of the first layer and frost.
Add the third cake layer and frost top layer and sides of the cake. Use a simple garnish like banana slices or pipe on the frosting.