ADD boiling water to combined gelatin mix and 1/3 cup crushed candy in medium bowl; stir 2 min. until gelatin mix is completely dissolved and candy is melted.
RESERVE 1/2 cup COOL WHIP. Add remaining COOL WHIP to gelatin mixture; whisk until blended. Spoon into 12 (2-oz.) shot glasses. Refrigerate 2 hours or until firm.
TOP with remaining COOL WHIP and crushed candy just before serving.