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 for later use.
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 reserved COOL WHIP and crushed candy before serving.