First mix the margarine (room temperature), eggs, sugar and vanilla sugar with the dough hook of the food processor. Add a pinch of salt.
Mix the baking powder with the flour well and then add the hazelnut kernels alternately to the butter egg mixture. Let knead for about 5 minutes.
Finally, place the dough on a floured surface and knead vigorously with floured hands. Then put the dough in the refrigerator for 1 hour.
In the meantime, assemble the meat grinder with the star nozzle and cover the baking sheet with baking paper. Heat the oven to 210 degrees top and bottom heat. TIP: Of course, other attachments also work, but I think the star shape bakes out best. Cookies that are too flat burn too quickly.
After the cooling time, let the dough through the meat grinder and place e.g. "S" -shaped biscuits on the tray. TIP: Always choose the same shape of the cookies for each tray, as the baking time depends heavily on the shape of the cookie. Bake the cookies for between 10-12 minutes, depending on the shape and oven. Then let cool down on a wire rack.