Delightful Banana Cake

Directions

1. Place egg whites in a small bowl; let stand at room temperature for 30 minutes.
2. In a large bowl, beat 1/4 cup butter and 1 cup sugar until crumbly, about 2 minutes. Add egg yolks; mix well. In a small bowl, beat the bananas, sour cream, applesauce and vanilla until blended. Combine the flour, baking powder, salt and baking soda; add to the butter mixture alternately with banana mixture. In a microwave, melt chocolate chips and remaining butter; stir until smooth. Cool slightly; stir in water.
3. Beat egg whites on medium speed until soft peaks form. Gradually beat in remaining sugar, 1 tablespoon at a time, on high until stiff glossy peaks form and sugar is dissolved. Fold into batter. Fold in walnuts.
4. Coat a 10-in. fluted tube pan with cooking spray and sprinkle with flour; add a third of the cake batter. Drizzle with half of the chocolate mixture. Repeat layers; top with remaining batter.
5. Bake at 350° for 40-45 minutes or until a toothpick inserted in the center comes out clean. Cool for 10 minutes before removing from pan to a wire rack to cool completely.
6. For drizzle, in a small heavy saucepan, melt butter until lightly browned. Remove from the heat; stir in the confectioners' sugar, vanilla and enough milk to achieve desired consistency. Drizzle over cake.