Heat oven to 375. Lightly spray a 8"-square baking pan w/ cooking spray. In small saucepan, combine water, white sugar, vanilla, 1 tbsp butter and nutmeg. Boil over high heat for 1 min, set aside.
In bowl, combine brown sugar, cinnamon and 1 tbsp butter, mix well. Unroll pastry and cut into quarters.
Stuff each apple cavity w/ brown sugar mix. Place each apple on a quarter of pastry. Fold pastry up, around apple. Pinch ends to seal. Place apples, seam-side down into pan. Pour sugar sauce over apples. Bake 45 mins or until golden. Serve warm, drizzled w/ sugar sauce.