Ingredients

• 1/4 lb butter
• 1 1/2 cups sugar
• 4 slightly beaten egg yolks
• 1 cup chopped pecans
• 1 1/2 cups sifted flour
• 1/2 teaspoon salt
• 1/4 cup milk (buttermilk is preferred)
• 4 stiffly beaten egg whites
• 1 teaspoon baking soda
• 2 tablespoons warm water
• 1 teaspoon vanilla
• 3 tablespoons butter, softened
• 3 cups confectioners' sugar
• 4 tablespoons heavy cream
• 1 teaspoon vanilla
• 1 cup mashed banana