I had saved this recipe for key lime spritz cookies from Midwest Living last year (it intrigued me) and made them as part of Christmas dessert. They were a big hit, so wanted to post the recipe. Here is the link to the recipe: http://www.midwestliving.com/recipe/cookies/key-lime-spritz-cookies/
I didn't have key limes or key lime juice so I used regular lime. While the icing was optional, I think it was a good addition. I didn't take a picture, but there is one with the recipe.