Slice apples into thin pieces and place into a large bowl
In a medium bowl mix the flour, cinnamon and sugar
Press pie crust into pie pan
Sprinkle half of flour mixture into the bottom of the pie crust, add the apples and put the remainder of the flour mixture over the apples. Cut the sticks of butter into 2 tablespoon chunks. Place one at the center of the pie, the others evenly spaced around the pie on top of the apples. Place the second pie crust on top. Flute and seal the edges of the pie. Make slits on the top pie crust. Cover edges with a 3" strip of foil. Bake pie for 45-50 minutes - removing edge foil strip for last 15 minutes of baking.