Take four tablespoons of the stiffly beaten mixture and put it in the fridge. You will need it to coat the cookies.
With the help of a wooden spoon, fold the grated almonds and the cinnamon into the beaten egg mixture and knead the cookie dough again briefly with your hands.
3 ¼ g Ground almonds, 1 tsp Cinnamon
Now cover two baking sheets with baking paper and set them aside.
Sprinkle some icing sugar on the work surface and roll out the sticky dough (approx. 5 mm // 0.2 inch).
Icing sugar for dusting the work surface
Now, little by little, cut out little fir trees (or if you decide to go for the stars, stars) and lift them onto the prepared baking sheet lined with baking paper.
To make cutting easier, regularly dip the cookie cutter in cold water before cutting. This water coating will prevent the dough from sticking.
Knead the dough left over from cutting with two tablespoons of grated almonds and roll it out again to cut out the remaining cookies.
Brush the leftover whipped egg white thinly on the cutout cookies before you put the tray on the middle rack in the oven.
Bake for about 20 minutes and repeat with the remaining cinnamon stars.
Let the baked cookies cool on the baking sheet, and once cooled, store them in an airtight container lined with parchment paper or a cookie tin that seals tightly.