Mix flour and salt in a large bowl. Cut in cold butter until the mixture looks like coarse crumbs.
Add ice water 1 tablespoon at a time, mixing just until the dough comes together.
Form into a disc, wrap in plastic, and refrigerate for at least 30 minutes.
Roll dough into a 12-inch circle on a lightly floured surface. Place in a 9-inch pie dish, trim edges, and crimp.
Place in the freezer for 15 minutes (this helps prevent shrinkage).
Blind bake for extra crispiness.
Preheat oven to 375°F (190°C).
Line chilled crust with parchment paper and fill with pie weights, dried beans, or uncooked rice.
Bake for 15 minutes.
Remove weights and parchment, brush the crust lightly with beaten egg (egg wash), and bake another 5–7 minutes until lightly golden. The egg wash seals the crust to keep it crisp under the filling.