Gather all ingredients and equipment. Line baking sheets with parchment paper. Preheat oven to 300°F.
In the bowl of stand mixer fitted with the whip attachment whip together the egg whites, salt, and powdered sugar till medium-firm peaks. It will look just like marshmallow fluff! Mix in the vanilla extract.
Place about 1/3 of the whipped egg white mix into another bowl and reserve (this is very important!)
With the remaining egg white mix fold in the ground cinnamon, almond flour, and chopped walnuts.
Dust a work surface with powdered sugar and dust your hand with powdered sugar. Roll out the dough till about 1/2 inch thick. Cut using a 2 inch star cutter and place on the prepared baking sheets about 1 1/2 inches apart. For better cutting dip the cutter into a bowl of water after a couple of uses, this will help make sure that your star cookies look like stars.
Brush the tops of the cookies with the reserved egg white mix with a pastry brush. If the mix is a little stiff add a couple drops of water for easier brushing. Bake for 15-20 minutes depending on your oven make sure the white tops of the cookies do not get brown. Allow to cool.