For the vanilla crescents, place the butter in a bowl with the nuts, powdered sugar, vanilla sugar, the pulp of a vanilla bean and 100 grams of flour and mix well with the dough hooks of the hand mixer.
Put the remaining 200 grams of flour on the countertop, turn the dough out of the bowl and knead well with the remaining flour.
Wrap the finished dough well in plastic wrap and refrigerate for at least an hour. After chilling, shape the vanilla crescent dough into small balls.
Gently roll the balls into a stick with the palms of your hands and bend into a croissant. Place the croissants on a baking tray lined with baking paper and bake at 170 °C convection oven for approx. 10-12 minutes.
Let the croissants cool briefly and roll them in powdered sugar and vanilla sugar while they are still lukewarm.