Yes, s’mores can also be made in the oven.  Preheat your oven on broil, on the lowest setting. Place a small sheet of parchment paper on a baking sheet. Place 4 graham cracker squares on the baking sheet followed by half of the marshmallow, with the sticky side down on the graham cracker. Place the baking sheet in the oven and bake until marshmallows are puffed and golden, about 2 - 3 minutes. Be sure to keep an eye on the marshmallows because they WILL burn quickly. Remove the tray from the oven and place the chocolate on top with the remaining graham cracker halves and press to flatten.