Heat oven to 425Â°.
Stir together sugar and flour.
In pastry-lined pie pan, alternate layers of apples, cranberries and sugar mixture, beginning and ending with apple layers; dot with butter.
Cover with top crust which has slits cut in it; seal and flute.
Cover edge with 2- to 3-inch strip of aluminum foil to prevent excessive browning; remove foil last 15 minutes of baking.
Bake 40 to 50 minutes or until crust is brown.