Briefly toast the hazelnuts in a coated pan, then let cool down a little. Knead together with 50 g powdered sugar, 1 teaspoon cinnamon, flour, salt and margarine to form a smooth dough. Let rest for about 10 minutes.
Then roll out the dough thinly and cut out stars. On a lined with baking paper
Bake the tray at 200 ° C for about ten minutes. Let cool down.
Mix the rest of the powdered sugar with the rest of the cinnamon and 3 tablespoons of water until smooth and brush the cold stars with it. Let dry well before packing.