Zimtsterne - Cinnamon Star Cookies have an unmistakable cinnamon and nutty flavor, with a lovley crisp on the outside and a chewy inside. These cookies are Switzerland's and Germany's most traditional Christmas treat. Christmas wouldn't be complete without these delicious stars.
Add egg whites and salt to a mixing bowl and lightly whisk together.
Add sugar, cinnamon, lemon juice, and almonds to the egg-white mixture. Incorporate well until a dough forms.
Wrap the dough in plastic foil and place it in the refrigerator. Let it chill for 2 - 4 hours.
Roll out dough
Line a baking sheet with parchment paper.
Place dough onto a lightly sugared work surface. Since this dough doesn't contain flour, only use sugar to roll out the dough.
Roll out dough until it is about ½-1 cm thick.
Cut out the cookies with a small star cookie cutter.
Fill a small bowl with water. Clean the cookie cutter frequently to keep the dough from sticking and achieve sharp edges in the star.
Place the stars on the baking sheet and let them dry overnight or for at least 6 hours.
Bake cookies
Preheat oven to 460°F or 240°C
Bake the stars for 4 minutes (every oven is different so bake time might slightly differ). The cookies should be soft when you take them out of the oven. They will harden as they cool.
Place them on a cooling rack.
Glaze
Add egg whites, powdered sugar, and lemon juice to a mixing bowl. Use a stand or hand mixer, and mix until the egg whites are light and fluffy, about 5 minutes.
Use a butter knife, spatula, or spoon (whichever works best for you) and spread the glaze onto the stars.
Let the glaze completely dry, then store the Zimtsterne in a cookie tin at room temperature.
Notes
Cookies stay good for about two weeks in an airtight cookie tin.