To make orange-coconut filling, in small microwavable bowl, mix sugar and cornstarch. Gradually stir in 1/3 cup water. Stir in orange peel and orange juice. Microwave uncovered on High about 1 minute or until mixture thickens and boils; stir. Microwave 30 seconds longer, stirring every 15 seconds. Stir in 2 tablespoons coconut; cool.