2 ounces (4 tablespoons) unsalted butter, softened
3 tablespoons sugar
1 large egg yolk
1 cup all-purpose flour
1 teaspoon coarse salt
Stir together butter and sugar in a medium bowl. Stir in yolk. Add flour and salt, and stir until mixture is dry and crumbly. Press dough into bottom and up sides of a 9-inch pie dish. Freeze until firm, about 20 minutes. Meanwhile, preheat oven to 375 degrees.
Bake, rotating halfway through, just until crust turns golden brown, 20 to 22 minutes. Let cool in dish on a wire rack.