- 3 cups cake flour
 - 2 teaspoons baking powder
 - 1 (4 ounce) bar sweet chocolate, grated
 - 1 cup chopped walnuts
 - 1 cup butter
 - 2 cups white sugar
 - 4 eggs, beaten
 - 1 teaspoon vanilla extract
 - 1 cup milk
 
- Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 9×13 inch pan. Reserve 1 tablespoon of the cake flour. Sift together remaining flour and baking powder. Set aside.
 - Toss the chocolate and walnuts with reserved 1 tablespoon of flour. Set aside. In a large bowl, cream together the butter and sugar until light and fluffy. Beat in the eggs one at a time, then stir in the vanilla. Beat in the flour mixture alternately with the milk, mixing just until incorporated. Fold in the chocolate and walnuts.
 - Pour batter into prepared pan. Bake in the preheated oven for 35 minutes, or until a toothpick inserted into the center of the cake comes out clean. Allow to cool before frosting.