Pour batter evenly into the three pans and bake for about 25-30 minutes or until a toothpick inserted in middle comes out clean. Let cakes cool in pan then turn over onto wire rack to cool completely. Assemble cake once completely cooled–one layer of cake on bottom of cake plate, followed by icing, then second layer, icing, third layer, then icing the top and sides until completely covered. Garnish with shaved chocolate, chocolate chips, or chocolate sprinkles on top. Store in airtight container in refrigerator.