Roll pastry about 1/8 inch thick and cut into six 7-inch squares.
Peel and core apples.
Bring to boil 1 cup sugar, the water, 3 tablespoons butter, and 1/4 teaspoon cinnamon.
Put an apple on each square of pastry.
Mix remaining 1/2 cup sugar and 1 1/2 teaspoons cinnamon; fill apple cavities.
Dot with remaining 1 tablespoon butter.
Bring opposite points of pastry up over apple.
Overlap, moisten, and seal.
Lift carefully and put a few inches apart in baking dish.
Pour hot syrup around dumplings.
Bake in preheated hot oven (425°F.) for 40 minutes, or until crust is well browned and apples are cooked through.