Bake cupcakes per package instructions. Allow to cool completely.
Prepare pudding according to package instructions.
Use an apple corer to remove the centers of each cupcake.
Transfer filling to a piping bag with a large tip. Fill each cupcake with pudding.
Frost the cupcakes with the chocolate icing.
Notes
Use the ingredients your cake mix calls for. I used a Duncan Hines mix. Other brands might call for different ingredients than the eggs, water, and vegetable oil listed.
Nutrition information is an estimate for one serving.