For serving, place the amount you'd like to prepare on a foil lined baking sheet. Set the oven to broil. Slice a marshmallow in half and place half a marshmallow over each cookie cup. Broil just until the marshmallow starts to turn golden, about a minute or so...be sure to keep an eye on the pan, as they can burn easily. As soon as they're out of the oven, top each with a little wedge of Hershey's chococate then serve immediately.