The one thing I remember from my first and only trip to Key West was the abundance of key lime flavored delights. Key lime ice cream, cheese cake, martinis, and, of course, pie. What better way to represent Florida than with a key lime cookie.
For the key lime cookie, I took my traditional recipe for Russian Tea Cakes and added the key lime flavor. I thought the light, crumbly texture of the Tea Cakes would be the perfect vehicle for the Key Lime flavor. I traded out the walnuts for macadamias to keep with the tropical feel.
Unfortunately, in my area of Pennsylvania, there seemed to be a shortage of key limes. After trips to 4 different grocery stores I came up empty handed. I had to resort to using regular limes. Hopefully in your area, key limes are a little more abundant. That's one thing I miss about living in the NYC metro area - the ability to get almost any ingredient you need at almost any time of day.