Preheat oven to 375°F. Unfold puff pastry sheet on a cutting board. Using a pizza cutter or sharp knife, cut into 1 1/2-inch irregular pieces.Advertisement
In an extra-large bowl combine brown sugar, flour, molasses, 1 tsp. of the cinnamon, and the ginger (mixture will be crumbly). Add apples; toss to coat. Spread apple mixture in a 10-inch cast-iron skillet. Drizzle with 1/4 cup of the butter. In a small bowl combine the granulated sugar and remaining 1/4 tsp. cinnamon; set aside. Arrange pastry pieces over apple mixture. Drizzle with remaining butter and sprinkle with the cinnamon-sugar.
Bake 50 to 60 minutes or until bubbly and pastry is golden. Remove and cool 1 hour on a wire rack. Serve warm with ice cream.