Banana Cake

For the cake:
1 1/4 cups sugar
1 cup sour cream
2 eggs
4 T. butter, melted
3 - 4 ripe bananas, mashed
2 tsps. vanilla
2 cups flour
1/2 tsp. salt
1 tsp. baking soda
1 cup chopped walnuts (optional)

For the frosting:
4 T. butter, softened
1/2 cup heavy whipping cream
1 tsp. vanilla
2 1/2 cups powdered sugar

Preheat the oven to 375 degrees.  Grease a 9x13 pan with nonstick cooking spray.
In a medium bowl, cream together sugar, sour cream, egg and melted butter.  Add mashed bananas and vanilla.  Add flour, salt and baking soda; mix well.  Pour into greased pan and bake for 20 - 25 minutes.  Cool completely before frosting.
To make the frosting - cream the butter and powdered sugar together.  Slowly add the heavy cream; stir until smooth.  Stir in vanilla extract.  Spread on cooled cake.