No graham crackers needed to make these s'mores try a  chocolate sandwich cookie. It's a perfect combination  for a gooey marshmallow and melted chocolate. Place them under your broiler if you don't have a campfire.

12 chocolate sandwich cookies, such as Oreos ®
12 marshmallows
12 squares milk chocolate candy bar (about 1.5 ounces)

Preheat the broiler.

Twist the tops off the cookies. Arrange the cookie bottoms, cream-side up, on a baking sheet. Put a piece of chocolate on the cream filling and then top with a marshmallow, laying on its side.

Broil, watching closely, until the marshmallows are golden, about 30 seconds. Sandwich each with the remaining cookie tops. Eat while they're melted and gooey.