Double Chocolate Cake
["1 box yellow cake mix", "1 box instant vanilla pudding", "1/2 c. cooking oil", "1/2 c. water", "6 oz. pkg. chocolate chips", "1 bar German sweet chocolate, grated", "8 oz. sour cream", "4 eggs"]
["Mix all ingredients together and bake at 350\u00b0."]
["yellow cake mix", "vanilla pudding", "cooking oil", "water", "chocolate chips", "sweet chocolate", "sour cream", "eggs"]