In medium microwavable bowl, microwave chocolate chips uncovered on High 45 to 60 seconds, stirring every 15 seconds, until melted and smooth. Using candy cane for handle, dip marshmallows into chocolate to coat. Let stand 2 minutes on one of the cookie sheets. Sprinkle marshmallows with chopped mints. Place flat side down on remaining cookie sheet. Refrigerate about 15 minutes or until chocolate is set.