As much as I hate reviewers who changed the recipe, I had to do it out of necessity. I was really excited about trying this recipe, that I used what I had instead of waiting to restock my pantry. I used my last ½ cup of cake flour & substituted in 1 cup of a.p. flour for the rest. I used clarified butter in place of shortening. I also used a full tablespoon of vanilla extract. I laid parchment over the balls & flattened them with the rounded bottom of a drinking glass, then peeled off the parchment, then cooked them for 25 minutes. The resulting cookie was perfectly crispy & delicious. I would have to do a side-by-side comparison of the cookie I made and the commercially produced one - as they ARE a little bit different - but I think yours has better flavor and homemade is ALWAYS better than commercially purchased. THANK YOU FOR THE RECIPE!!!