1.
Mix flour, sugar and salt in a bowl. Cut the cold butter into small cubes, add and rub by hand into an evenly crumbly mixture.
2.
Beat the egg, add and bring together into a dough - do not knead! Press the dough ball flat and cover; refrigerate for about 30 minutes.
3.
Press the dough ball flat on a well-floured work surface and roll out. Gently place the dough into the well-greased tart pan and press edges and base well. Prick the base several times with a fork.
4.
Blind-bake the pastry: Cover the base with a trimmed baking paper and, for example, fill with chickpeas (or other legumes). Blind-bake for about 20 to 25 minutes in the lower half of the oven preheated to 200 degrees with top/bottom heat. Remove, discard legumes and baking paper.