I guess I don’t have to introduce this cookie anymore, simply google World Peace Cookies and you will find many bloggers claiming them as the best cookies they ever had.
Alternatively, I will suggest you to grab a copy of Baking: From My Homes to Yours and refer to page 138. Not only you get the recipe of these lovely cookies, you can experiment the wonderful recipes of Dorie Greenspan and soon, you will most probably exclaimed Baking as your favourite book.
Anyway, if you decide to make these cookies yourself, do remember to keep aside a few (if there are not eaten up yet) for vanilla ice cream sandwich!!! YUMMY!!!