MIX cream cheese and 1 Tbsp. milk in large bowl with whisk until well blended. Stir in 1-1/2 cups COOL WHIP and candy; set aside.
BEAT pudding mixes and 1-1/2 cups milk in separate large bowl with whisk 2 min. (Pudding will be thick.) Stir in 2 cups of the remaining COOL WHIP; spread half onto bottom of crust. Cover with layers of cream cheese mixture and remaining pudding mixture.
REFRIGERATE 4 hours or until firm. Garnish with remaining COOL WHIP before serving.