Caramel Apple Strudel

Preheat oven to 375°. In a large saucepan, combine the first 6 ingredients. Bring to a boil. Reduce heat; simmer, uncovered, 15-20 minutes or until apples are tender, stirring occasionally. Cool completely., Unfold puff pastry onto a large sheet of parchment; roll into a 16x12-in. rectangle. Transfer parchment and pastry to a baking sheet, placing a short side of the rectangle facing you. Using a slotted spoon, arrange apples on bottom half of pastry to within 1 in. of edges. Drizzle apples with caramel topping. Roll up jelly-roll style, starting with the bottom side. Pinch seams to seal, and tuck ends under. , In a small bowl, whisk egg with water; brush over pastry. Sprinkle with coarse sugar. Cut slits in top. Bake 25-30 minutes or until golden brown. If desired, serve with whipped cream and additional caramel topping.