Banana Cake + Vanilla Bean Frosting

Via butteryum.blogspot.commakes one 8×8-inch pan (double recipe for a 9×13 pan)

Cake:
2/3 cup sugar
1/2 cup sour cream
1 egg
2 tablespoons butter, softened
2 mashed super ripe bananas (about 3/4 cup)
1 teaspoon pure vanilla extract
1 cup flour
1/4 teaspoon salt
1/2 teaspoon baking soda
Frosting:
2 tablespoons butter, softened
1/4 cup heavy cream
1/2 teaspoon vanilla bean paste (or equal amount of pure vanilla extract)
1 1/4 cups confectioner’s sugar
To make cake (easily mixed by hand):
Preheat the oven to 375F (see note below).  Cream together sugar, sour cream, egg, and 2 tablespoons softened butter.  Add mashed bananas and 1 teaspoon vanilla extract.  Add flour, salt, and baking soda; mix well.  Pour into greased 8×8 pan.  Bake at 375F for 20-25 minutes until a toothpick inserted in the center comes out clean.  Cool completely before frosting.
To make frosting:
Cream butter and confectioner’s sugar together until smooth.  Slowly add the heavy cream; stir until smooth.  Stir in the vanilla bean paste until fully incorporated.  Spread on cooled cake.
Note – Bake at 350F if using a glass pan.
Recipe doubles well to fit in a 9×13 pan.