Heat the oven to 175°C (350°F)
Soften the butter in the microwave for a few seconds
Mix the flour, baking powder, sugar and vanilla sugar in a bowl
Mix the saffron with the butter before adding it to the bowl with the syrup
Use a hand mixer with the dough hooks and mix everything until it is possible to combine it to a ball with your hands
Line a baking sheet with parchment paper
Divide the dough in two and spread them out in two lines across the sheet.
Carefully roll them out and even out the edges.
Bake for 12 min, take it out of the oven and start cutting the cookies while it is still hot. Make the cuts slightly slanted to get the classical look of the Swedish kolasnittar