This dessert was absolutely fabulous, and a great end to our vegetarian grilling adventure. I used my new juicer and some really delicious fresh oranges, and I think it made all the difference (so shy away from the ol’ Tropicana if you can). We served this with some vanilla frozen yogurt, and it was heavenly!
Combine first 6 ingredients in a large zip-top plastic bag. Add apple slices; seal and marinate in refrigerator 1 to 2 hours, turning bag occasionally.
Remove apple from bag, reserving marinade. Place apple slices on grill rack coated with cooking spray; grill 3 minutes on each side, turning and basting frequently with reserved marinade. Arrange apple slices on a platter; drizzle with any remaining marinade.