In a medium mu combine the milk, cocoa powder, and sugar. Stir and microwave for 2 minutes.
Carefully remove from microwave.
Take a marshmallow and run it around the rim of a tall mug. You can also use a bit of honey. Turn it over and dip it into the graham cracker crumbs.
Carefully pour the hot chocolate into the mug. Top with marshmallows.
Place the mug on a baking dish.
Turn on the broiler in your oven to high. Place the cookie sheet in the oven for 1-2 minutes. Watch it carefully to make sure the marshmallows don’t burn.
Remove from oven and drizzle with chocolate syrup if desired. Mug handle will be hot for a few minutes so use caution when handling.