Melt butter in a sauce pan. Stir in flour to form a paste. ( although, when I did this, it didn't form a paste cause there was too much butter) oh well, Add white sugar, brown sugar and water and bring to a boil. Reduce temp and let simmer for 5 min.
Now, I just put all my apples into the pot and stirred it all around in with the sugar mix.. prepare you pie pastry, pour it in, cover pie with other pie pastry, work your lattice.
Bake 15 min. at 425 F , Reduce the temp to 350 F and continue baking 35-45 minutes.