BEAT Neufchatel and 1/2 cup of the milk in medium bowl with electric mixer on low speed until well blended.
ADD remaining 1-1/2 cups milk to pudding mix in separate medium bowl. Beat with wire whisk 2 minutes or until well blended. Add to Neufchatel mixture; mix well. Stir in liqueur. Pour into medium bowl.
SPRINKLE 2 Tbsp. of the grated chocolate over pudding mixture; top with whipped topping. Sprinkle with remaining grated chocolate. Refrigerate at least 1 hour before serving.