Make a kneading dough from the flour, butter, vanilla sugar and the egg yolk. Continue kneading this with your hands and then form a roll with a diameter of approx. 3 cm.
Mix the granulated sugar and chopped almonds and sprinkle on the countertop.
Brush the rolling pin all around with egg white and roll through the sugar-almond mixture. Place the rolling pin in the refrigerator for 30 minutes.
Now cut off 1/2 cm thick slices from the roll and place on a baking sheet lined with baking paper.
Bake the biscuits for about 8-10 minutes at 180 ° C so that they are golden yellow.