1Heat the oven to 350°F and arrange a rack in the middle.
2Combine the butter, sugar, and salt in a large bowl and stir until evenly incorporated. Add the measured flour and stir until just combined and a soft dough forms.
3Sprinkle the dough over the bottom of a 9-inch tart pan with a removable bottom. Using a measuring cup or your fingers, evenly press the dough into the bottom and up the sides of the pan (flour the cup occasionally to prevent sticking).
4Cover the tart shell with plastic wrap and let it rest in the refrigerator for 30 minutes. Once chilled, prick it all over with a fork and bake until golden brown, about 20 to 25 minutes.
5Remove from the oven and cool completely on a wire rack before filling and removing from the pan.