In a medium bowl whisk flour with sugar and salt. Incorporate butter using a pastry blender, a fork or a pastry processor, until crumbs are formed. Add egg yolk and water and stir until incorporated.
Wrap the dough in plastic wrap, shape into a disk and refrigerate for at least 1 hour.
Slightly grease a 8-9 inch (20-23 cm) pie pan.
On a lightly floured surface roll the dough until it's about 12 in (30cm) in diameter.
Line the pan with the rolled dough and press the edges. Trim the excess dough and refrigerate for 30 minutes.
Preheat oven to 350F (180C).
Prick the crust with a fork. Line the crust with parchment paper and fill with pie weights or beans. Bake for 20 minutes.
Remove the parchment paper and weights and bake for 10 minutes more.
Let it cool slightly on a cooling rack.