– 3 medium, ripe bananas, mashed (about 1 1/4 cups of mashed banana) – 1 1/4 cup granulated sugar – 1 cup sour cream – 1/2 cup vegetable oil (you can also use unflavored coconut oil) – 2 large eggs – 1 tsp. vanilla extract – 2 cups all purpose flour – 1 tsp. baking powder – 1 tsp. baking soda – 1/2 tsp. salt – 1/2 cup chopped walnuts or pecans
Preheat oven to 350 degrees. Lightly spray a 9x13" pan with non-stick baking spray. Set aside.
To a second bowl, mix together the dry ingredients; flour, baking powder, baking soda and salt. Use a fork or whisk to mix together, helping to break up any lumps.
Gradually add the dry ingredients to the wet ingredients. Use a whisk or hand mixer to mix the batter. If adding nuts, fold them into the batter using a rubber scraper.
Pour the batter into the prepared pan. Bake the cake at 350 degrees for 32-35 minutes to golden brown. Test for doneness by inserting a toothpick into the center of the cake. If it comes out clean and crumb free it is done. Let cake cool completely to room temperature before frosting.
Spread cream cheese frosting evenly onto the cooled cake. Top with additional chopped nuts and/or banana slices, if desired.