The cookies are like little mini brownie bites. The peppermint marshmallow filling is divine.
Can be made ahead. Store in an airtight container at room temperature, in single layers separated by waxed paper, up to 2 days.
Follow the directions for softening the powdered gelatin. It will form a soft little pillow in the bottom of the mixing bowl and then you'll pour your sugar syrup over the top. As you beat this mixture together it cools and will start to form marshmallow!