In a large bowl, combine cake mix, pudding mix, milk, eggs, and oil. Beat on low speed of electric mixer for 30 seconds. Beat at medium speed for 2 minutes.
Stir in chocolate chips and grated chocolate.
Pour into 2- 9 inch layer pans and bake at 350 degrees for 33-38 minutes.
Cool 10 minutes before removing from pan to a wire rack to cool completely.
Frost with a chocolate icing.
Not a NESTLÉ®-tested recipe.