Preheat the oven to 350 degrees.
Using an electric mixer, mix the butter and sugar until creamy.
Add the egg yolks, vanilla extract, almond extract, salt, and mix a minute or so.
Add the flour gradually, and mix until well-incorporated. (Scrape the sides of the bowl, if needed).
Fill the cookie press with the dough, and form the cookies according to your particular cookie press instructions. I use a nonstick baking sheet without any parchment or silicone pads.
Use a pastry brush to brush the egg whites over the formed dough.
Sprinkle the dough with decorative sugar and/or sprinkles of your choice.
Bake for 10 minutes in the preheated oven at 350.
Remove the cookies from the oven, and allow to cool for about 5 minutes
Use a turner/ flipper to carefully remove the cookies from the baking sheet, and continue cooling completely on a wire rack before storing in an airtight container.
Nutritional information is approximate and was calculated using a recipe nutrition label generator.