Turn the batter into the skillet, and bake for about 25 minutes, until the edges turn golden brown and the center is set. After it comes out of the oven, top with remaining Hershey's, graham cracker pieces, and marshmallows. If you have a mini blow torch, torch the marshmallows slightly to get that "just roasted on the fire" look! Wait 30 minutes before cutting and serving. Enjoy!