For the dough, stir the butter until foamy and gradually add sugar, vanilla sugar, flavor and egg. 2/3
Stir in the sifted flour mixed with baking powder, tablespoon at a time. The rest of the flour, the semolina and the hazelnut kernels, ground, knead underneath. If the dough sticks, refrigerate it for a while.
Shape the dough into rolls (about 2 cm in diameter), cut off slices about 1/2 cm thick, shape them into balls and place on a greased baking sheet. Lightly press a hazelnut kernel into each ball.
Baking time: 20-25 minutes at 175-200 ° C (preheated).
Melt the glaze according to the instructions and pour very fine strips over it.