Ingredients
For the Cake:
1/2 cup unsalted butter, softened
1 cup granulated sugar
1 egg
1 tsp vanilla bean paste
3 medium bananas
1 3/4 cup all purpose flour
1 tsp baking powder
1 tsp baking soda
1/2 tsp kosher salt
For the Frosting:
1/2 cup unsalted butter, softened
1 tsp vanilla bean paste
4 cup powdered sugar
1/4 cup skim milk
Instructions
For the cake, beat butter and sugar until creamy, about 3-4 minutes. Beat in egg and vanilla bean paste. Add in bananas, beating until smooth and mashed. Add in flour, baking powder, baking soda and salt. Pour batter into a greased and floured 15x10 baking sheet. Bake in a 350 degree oven for 18-22 minutes. Remove and cool completely.
For the frosting, beat butter with vanilla paste, powdered sugar and milk until creamy (about 5 minutes). Spread over cooled cake, cut into large slices. ENJOY!
**if you don't have vanilla bean paste, you can substitute vanilla extract or one vanilla bean
Source Recipes : -Here-