Preheat a grill over high heat.
On a heavy duty sheet of aluminum foil, add the chocolate, 5 marshmallows, chocolate cookies, and top with chopped mint. Carefully close the foil and put on the grill over indirect heat. Heat until the chocolate is melted. Put the remaining 5 marshmallows onto a skewer and grill on all sides.
Put a pizzelle on each of 5 plates and top with the chocolate mixture. Add a dollop of whipped cream, and a toasted marshmallow. Garnish with a broken pizzelle and mint leaves.