Process the flour, powdered sugar and butter using a food processor until you reach a sand-like texture.
Add the yolk and keep processing. If the dough hasn't formed yet, add a little bit of water and process until the texture is smooth and flexible.
Transfer the dough to a bowl, cover and refrigerate for an hour.
Remove the dough from the fridge and knead for 2-3 minutes.
Divide the dough into 4 equal parts and roll them out to ½" thick layers.
Butter the pan, place the dough, tighten well, poke holes in the middle with a fork and cut the edges.
Freeze for 30 minutes
Preheat the oven to 355 °F (180 °C) and bake for 15 minutes, until golden.