2 cups sugar
½ cup butter (1 stick)
2 egg yolks
3 cups all-purpose flour
2 teaspoons baking powder
1 teaspoon baking soda
½ teaspoon salt
1 cup milk
3 crushed bananas
1 teaspoon vanilla
2 egg whites, beaten
Combine the sugar and butter and beat on low speed until completely combined.
Add the egg yolks and beat on high speed until the mixture is smooth and fluffy.
In a separate bowl, combine the dry ingredients — flour, baking powder, baking soda and salt — and whisk thoroughly. You’ll want the baking soda to be well distributed throughout the flour before adding to the wet ingredients.
Alternate adding dry and wet ingredients (milk), beating each time until it is just incorporated. Start and end with dry.
Now mash the bananas and add them to the batter.
Add the vanilla and beat until combined.
Whip the egg whites until they form stiff peaks, but not so much you dry them out.
Carefully fold the egg whites into the batter. Pour batter into greased and floured round pans. Bake at 350 degrees for 35 minutes.