"I feel the recipe is written improperly. The eggs should be listed as 2 eggs, 1 egg white "seperated". I included the extra egg white in the batter and it was extremely wet, and I had to add another full cup of flour to try and repair the batter. I believe it diluted the taste of the cookie and made it too dry.
I also substituted almond extract for the vanilla which I feel improved the taste. I will make them again but this time I will know not to include the extra egg white into the batter. I see that the egg white is discussed later in the recipe to be used for the egg wash but since this recipe is written by professionals I feel like they should know better than to write the recipe in this manner.