Optional: Roast the hazelnuts in a pan without using any fat, until goldbrown. Leave to cool.
Mix all dry ingredients. (nuts, flour, sugar, baking powder, cinnamon, cloves, and salt)
Add butter in pieces and crumble.
Add egg and knead to a dough.
Wrap in a cling film and place in fridge for a minimum 2 hours.
Take ⅔ of dough and roll out on a floured surface to the size of the baking tray. Flour the dough so that it does not stick.
Place dough on the baking tray with baking paper.
Spread red current jam evenly on dough.
Roll out rest of the dough and cut in about 1 to 1,5 cm stripes.
Place the stripes diagonal on jam, leaving spaces of 1 to 1,5 cm. If they break, simply stick them together.
Bake in preheated oven at 180° C for about 20 minutes.
Leave to cool.
Cut in Stripes of about 2 x 6 cm.
Store in cookie tin.
The Linzer Streifen taste best after 2 days in a cookie tin. They last about 4 weeks.
Cut out biscuits from the remaining dough, bake at 180° C for about 8 minutes and stick together with jam.