Trash Bag Treats Trash bags taste best when they're fresh and warm. They are so easy to prepare, but taste amazing. Serving: 24 6 caramel squares 24 large marshmallows 1. Unwrap caramel squares and cut them in four equal parts with your kitchen scissors. Set aside. 3. Snip marshmallows partway down the center, lengthwise. To create a trash bags, the marshmallow needs to stay in one piece, so make sure you don't cut all the way through. Insert one piece of caramel into the cut center of each sliced marshmallow. 3. With clean hands, pinch the sides of the marshmallow back together around the caramel piece. Gently pinch and pull the top and sides of the marshmallow to form your bag. 4. Arrange the bags on the toaster oven tray or a square of heavy-duty foil about 2 inches apart. Toast on a "light toast" setting for about 30 seconds or until marshmallows begin to bubble. The bags will melt and lose shape quickly, so be careful not to overcook. Remove bags from oven and cool slightly.