Put flour, butter, sugar, and 2 packages of vanilla sugar in a bowl and mix well. Wrap it in plastic wrap and put it in the fridge for approx. an hour (30 minutes are enough, but i find it easier to work with that way).
Mix remaining 2 pckgs. vanilla sugar with icing sugar, put aside
Preheat oven to 180°C top/bottom heat (160°C fan-assisted). Form cookie dough into small crescents (see pic for size) and bake for approx. 15 minutes (more or less, take out when they start to brown).
Let cool for 2-3 min, sieve prepared sugar mix over cookies and roll them around in it, let cool for another 2-3 minutes so you don't burn your mouth haha, and enjoy!
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