Preheat oven to 350 degrees
Line 24 count cupcake pan with paper liners
Cream butter with electric mixer on medium speed until fluffy
Add egg yolks, one at a time, mixing after each addition
Add bananas and extract/extracts and mix well
Whip egg whites until stiff peaks form.
Fold ½ of whipped egg whites into wet mixture.
Combine dry ingredients in a separate bowl.
Add dry ingredients to wet ingredients and mix until blended.
Add remaining ½ whipped egg whites and fold in.
Bake on center rack of oven for approximately 12 minutes or until a toothpick inserted in center comes out clean (or at least mostly clean)
Remove from oven to a wire rack and cool completely.