Sift together butter and sugar ... ingredients alternately with buttermilk to creamed mixture, beating well ... addition. Stir in zucchini. Pour batter into greased ... pan. Sprinkle with chocolate chips and walnuts. Bake in ... minutes or until cake tests done. Cool in pan ... squares. Makes 16 servings.
Ingredients: 12 (buttermilk .. chips .. cocoa .. eggs .. flour .. salt ...)