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Key Lime Shortbread Cookies

Key Lime Pie...In A Cookie!

Last week I mentioned that my sister is not a huge fan of citrus flavors. Well, she obviously didn’t get it from my father, because citrus is a favorite of his- especially Key Lime.


blog_image by Mallory

blog_image by Mallory


Last week I mentioned that my sister is not a huge fan of citrus flavors. Well, she obviously didn’t get it from my father, because citrus is a favorite of his- especially Key Lime. Every time spring comes along, he is always asking for a Key Lime pie. For his birthday this year, I decided to make him a twist on key lime pie- Key Lime Shortbread Cookies.

These little bite-sized cookies are perfect for picnics, a light dessert or just to have on hand for hungry family and friends. And since they are slice and bake cookies, they are easy to make and don’t require rolling and cookie cutters!

Before I get started on the cookies, let me show you the difference between a regular lime and a Key Lime. I used to think that Key Limes were essentially the same thing as any lime. While the flavor is still somewhat comparable to a regular lime, look at the size difference! I think they’re so cute!


When you’re looking for Key Limes at the grocery store, they usually come in a bag like this:


Before you make the cookie dough, zest and juice the Key Limes. You need a total of 1 tablespoon of juice and 2 teaspoons of zest for the cookie dough. This equaled out to about 6 key limes for me. Since the limes are so small, they can be a little difficult to zest, but it’s definitely worth the effort.


You can either juice the limes by hand (a bit tedious, but like I said, worth it)…


…or you can use one of these handy lime juicers, which can fit about 3 Key Lime halves in it at a time. It takes a little less time to do it this way.


Now for the dough- combine flour, powdered sugar and cornstarch in a bowl. Cornstarch might sound like a strange addition to a cookie, but adding it makes for a more tender shortbread that melts in your mouth. 


Now beat the butter in a bowl until it’s nice and creamy.


Reduce the speed on your mixer to low, and add the flour mixture and all remaining cookie ingredients (lime juice and lime zest).


Beat the mixture until a soft dough forms.


Divide the dough in half, and form each half into a 10-inch log. Wrap these logs in plastic food wrap, and refrigerate for at least 2 hours to firm the dough so it is easy to slice.


After the 2 hours is up, remove the dough logs from the fridge and cut them into ¼-inch slices with a sharp knife. I like to make little notch marks every ¼-inch so I know where to cut.


Place all of the cookies onto a cookie sheet. Since these don’t spread much, you can put quite a few on one sheet.


Bake at 350°F for 9-11 minutes or until the edges are just barely browned. Cool completely.


While the cookies are cooling, combine the powdered sugar and another teaspoon of Key Lime zest. 


Stir in enough Key Lime juice for glazing consistency.


I found an easy way to portion the glaze onto the cookies is to put the glaze in a large plastic food bag and snip off a corner. Then squeeze about a ½ teaspoon of glaze into the center of each cookie.


You can either let the glaze set as-is, or spread it out over the cookie.


Let the glaze stand so it hardens, which takes about 15 minutes. 


Here’s dad with his birthday Key Lime cookies- as good as Key Lime pie? I think so!


If you like Key Lime pie, you’ll love these Key Lime Shortbread Cookies! Give them a try this summer.  Make sure to come back and let me know how they turned out for you.

Looking for a perfect meal to grill out on a warm, summer night? Come back in a few days when Liz will be sharing a meal that dad will love to make.

Mallory is a Product Specialist in the Test Kitchens at Land O'Lakes and writes for our Recipe Buzz® Blog.

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Ready to make the recipe? Let’s get started making Key Lime Shortbread Cookies!

Key Lime Cookies Recipe
Key Lime Shortbread Cookies