Heat oven to 375°F. Grease a 9-by-13-inch baking dish.

Roll each crust into an 8-by-16-inch rectangle; cut into two 8-inch squares. Center an apple on each square.

Mix brown sugar and cinnamon; fill apple centers with mixture and half the butter. Fold pastry around apples; pinch seams closed.

Arrange in dish. Simmer water, sugar, lemon juice and remaining butter 2 minutes; pour around dumplings.

Bake 40–50 minutes until golden and apples are tender. Spoon sauce over servings.