Notes: You can make this filling up to 2 hours ahead; cover and chill.
1. In a bowl, with an electric mixer on high speed, beat neufchâtel cheese, orange peel, and vanilla until smooth. Add whipping cream and beat on low speed until blended, then on high speed just until mixture resembles stiffly beaten whipped cream (do not overbeat).
2. Sift powdered sugar and fold into cream mixture. Fold in chocolate until evenly distributed.
Nutritional analysis per 1/2 cup.