Your favorite devils food cake recipe, made into cupcakes
Black string licorice
Bake your cupcakes according to the instructions, without using paper cup liners.
Slice off the top of the crown of each cupcake so that when it is turned upside down, it sits flat. This gives you more of a cauldron shape than a cupcake shape.
Cut the black string licorice into small pieces and poke them into the cupcakes as cauldron handles.