Special note if you're using Browned Butter:
At least one day before assembling, brown all or ½ of the butter. Place browned butter in a heat proof bowl and refrigerate.
When using browned butter, add 1 1/2 tablespoons of water to wet ingredients for each cup of pre-browned butter.
The picture here is of VERY browned butter. This is not the classic browned butter that is generally used by chefs. This amount of browning is not burned but really enhances the chocolate flavors in your cookie.