Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/2  cup           butter -- softened
   1      cup           sugar
   2                    eggs
   1 1/2  cups          all-purpose flour
   2      tablespoons   cocoa
   1      teaspoon      baking soda
   1      teaspoon      salt
     1/2  teaspoon      cinnamon
   1      teaspoon      vanilla extract
   1      cup           banana -- mashed
     1/2  cup           sour cream
     1/2  cup           walnuts -- chopped
     1/3  cup           miniature chocolate chips -- semisweet

Preparation:

Cream butter; gradually add sugar, beating until light and fluffy. Add eggs, one at a time, beating well after each addition. Combine flour, cocoa, soda, salt, and cinnamon; sift together. Stir flour mixture into egg mixture, blending well; add vanilla. Stir in banana, sour cream, walnuts, and chocolate morsels. Spoon batter into two greased and floured 7-1/2 x 3 x 2-inch loafpans. Bake at 350 degrees F. for 55 minutes or until a wooden pick inserted in center comes out clean. Cool in pans 10 minutes; remove from pans. and cool completely on a wire rack.