Cut butter and shortening. Add flour and salt. When mixed, add water, but don't stir with spoon. Instead, fluff with fork. (This will make the crust more flaky.)
Chill dough until firm (10-20 minutes). Flour work surface and rolling pin, and then roll out dough for bottom and top crust.
Stir ingredients together, and place in crust. Add top crust.
Bake at 410F for 10 minutes and then at 350F for 20 minutes. A few minutes before taking the pie out of the oven, coat the crust lightly with butter.