BEAT pudding mixes and milk in large bowl with whisk 2 min. Spoon 1-1/2 cups into crust; top with marshmallows. Stir 1-1/2 cups COOL WHIP into remaining pudding; spoon over marshmallows.
REFRIGERATE 3 hours. Meanwhile, pour chocolate into resealable plastic bag. Snip off small corner from bottom of bag; use to squeeze chocolate into 10 desired shapes on waxed paper-covered baking sheet. Refrigerate until firm.
TOP pie with remaining COOL WHIP, crushed candy and chocolate shapes just before serving.