Melt butter in a sauce pan.
Stir in flour to form a paste.
Add white sugar, brown sugar and water; bring to a boil.
Reduce temperature, and simmer 5 minutes.
Meanwhile, place the bottom crust in your pan.
Fill with apples, mounded slightly.
Cover with a lattice work crust.
Gently pour the sugar and butter liquid over the crust.
Pour slowly so that it does not run off
Bake 15 minutes at 425 degrees F (220 degrees C). Reduce the temperature to 350 degrees F (175 degrees C), and continue baking for 35 to 45 minutes.