I thought I would save time and just direct you to this link.
http://www.joythebaker.com/blog/2008/04/lemon-whoopie-pies/
I made these today. I followed the recipe exactly except that I made them smaller – about 1 Tablespoon of batter for each cookie. The plan was to give them away, but I couldn’t part with them. So much for the weekly exercise – now I’m going to have to start all over again.