Cut butter into dry ingredients until it resembles coarse cornmeal.
Stir in just enough cold water to make the dough hold together. Grandma says DON'T OVER STIR IT, or it will be tough and not flaky.
Roll out half of dough for bottom shell.
Put in pan
Peel & core about 6-8 nice tart apples
Cut into slices
Mix together pie filling
Place pie filling into first shell
Roll out 2nd crust as large as needed
Place top crust on and press edges down firmly
slit top crust to let steam escape
Bake at 350 degrees until a toothpick pierces apples easily (about 45 min-1 hour)