Mix flour, sugar, vanillin sugar, salt and baking powder in a bowl. Add butter in flakes and 125 ml milk, knead to a smooth dough with the dough hooks of the hand mixer. Cover and chill for about 15 minutes. Then let it rest at room temperature for about 30 minutes
Then knead well with floured hands. Roll out on a floured work surface to a thickness of about 2 cm. Cut out circles (approx. 6 cm Ø) with a circle cutter (alternatively a glass). Place circles on a baking paper lined with baking paper. Knead the rest of the dough again and process in the same way
Brush the dough circles with 2 tablespoons of milk. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for 12-15 minutes. Take out and place on a cake rack. Tastes best lukewarm. Goes well with double cream and strawberry jam
Waiting time about 45 minutes