I found this recipe online and it's by Rebecca Clyma. My roommate and I tried it last night SO GOOD!

Ingredients:
2 frozen 9 inch deep dish pie shells
1/2 cup unsalted butter
3 tablespoons all purpose flour
1/2 cup of white sugar
1/2 cup packed brown sugar
1/4 cup water
8 Granny Smith apples--peeled, cored, and sliced

Directions:

1. Melt butter in a sauce pan. Sitr 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. (very important because if it runs off it smells like the pie is burning.)

3. Bake 15 minutes at 425 degrees F. Reduce the temp to 350 degrees F and continue baking for 35 to 45 minutes.

Ok, this is the recipe exactly as I have it, but some advice: my oven runs hot, but I found that 15 minutes at 425 was too long because my crust got brown before my apples had soften.
Also, very important to do the lattice crust because white just on top the sauce is delicious, when mixed in the pie it gives the apples some moisture. Enjoy!!