Sift flour with baking powder, add chopped butter, sugar, vanilla sugar, pinch of salt, eggs and grated lemon peel. Mix to combine and knead into the dough.
Wrap the dough with plastic wrap and let it sit for 30 minutes in the refrigerator.
On a working desktop or a silicone mat sprinkled with sugar roll out with a rolling pin 5 mm thick dough. Brush with water and sprinkle with sugar. With a palm of your hand lightly press sugar into the dough. Cut into desired shapes with a cookie cutter.
Place cookies onto a baking sheet lined with parchment paper or a silicone baking sheet. Bake 10 - 12 minutes at 180 ° C. They are done when the ends become slightly golden.
Cool and put in a tightly closed metal container. They will keep for several weeks.