Make the crust: In a food processor or mixer fitted with a paddle attachment, combine flour and salt. Add butter one piece at a time, while pulsing or mixing at low speed, until mixture is fine and crumbly. Transfer to a large bowl and toss well with the cheese. Add ice water one tablespoon at a time, mixing lightly with fingers just until dough holds together. To test, pinch a small amount of dough. If it is crumbly, add more ice water. Form dough into a ball, wrap loosely in plastic, then roll into a disk. Refrigerate at least one hour, or up to 3 days, before rolling. (Dough can be frozen for up to a month.)