Grandma Ople's Apple Pie

Ingredients:
1 recipe pastry for a 9 inch double crust pie
1/2 cup unsalted butter
3 tablespoons all-purpose flour
1/2 cup white sugar

1/2 cup packed brown sugar
1/4 cup water
6-8 Granny Smith apples,peeled, cored and thinly sliced


Directions:
1. 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.
2. Meanwhile, place the bottom crust in your pan. Fill with apples, mounded slightly. Cover with a lattice work of crust. Gently pour the sugar and butter liquid over the crust. Pour slowly so that it does not run off.
3. 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