1. Preheat oven to 450°.
2. Place apples in an 8-inch square glass or ceramic baking dish; place 1 butter piece in center of each apple. Combine syrup and remaining ingredients in a small bowl, stirring with a whisk; pour over apples. Cover dish with foil; bake at 450° for 25 minutes or until tender. Remove from oven; place 1 apple on each of 4 plates. Stir cooking liquid with a whisk; divide liquid evenly among servings.