1 bag marshmallows
200 g dark chocolate with the highest cocoa content possible
20 good biscuits, e.g. Digestive
Put the marshmallows on sticks and grill them golden over the fire. Lay them on half of the biscuits, grate the chocolate over the hot marshmallows and top the "burgers" with the other biscuits.
If you don't have a fire, grate the chocolate over biscuits. Lay on the marshmallows and bake until golden in an oven at 200 degrees for a couple of minutes. Then lay on the other biscuits.