In a large bowl, whisk together the ground almonds, powdered sugar, and cinnamon.

Either by hand or with a mixer, mix in the egg whites and almond liqueur until a crumbly dough forms.

Using your hands, knead the dough until it becomes smooth. Cover and refrigerate while making the glaze.

For the glaze, beat 1 egg white until stiff peaks form. Then beat in the powdered sugar a little at a time, scraping down the sides of the bowl as needed.

Roll out a section of the dough onto a surface lightly dusted with powdered sugar. Roll out the dough until it is 1 cm or 1/2 inch thick. Using a small 6 pointed star cookie cutter, cut out star shaped cookies.

With a pastry brush, brush each star with the glaze and place on a parchment lined baking sheet. The cookies can be placed pretty close together because they won’t spread during baking.

Bake in a 190C/375F preheated oven for 10-15 minutes. Be careful not to let the glaze brown. It should remain mostly white with some tinge of golden along the edges. Place on a rack to cool and enjoy when at room temperature. Guten appetit and frohe Weihnachten!