1) Toast until you can slip the first layer off. Do so, eat and enjoy. Then return the now skinned marshmallow to the fire until you can slip the second layer off. Etc until you can't take it any more and eat the whole thing.

2) Toast until the middle is soft but not entirely melty, and then place atop a piece of milk chocolate atop a half of a graham cracker, then smoosh the whole thing down with the other half of the graham cracker, wait until the chocolate softens and gobble.

Honestly, toasted marshmallows without smores are of limited interest.