Key Lime Cookies are buttery sugar cookies topped with a creamy key lime filling and freshly whipped cream. Everything you love about key lime pie, in a cookie!
Preheat your oven to 350°F. Line a cookie sheet with parchment and set aside.
Cream the butter, brown sugar, and white granulated sugar in a large mixing bowl for about 3 minutes, or until the sugar is dissolved and the mixture is smooth.
Add the egg and vanilla extract to the mixing bowl. Whisk for another 2 minutes, or until the egg is fully incorporated with the creamed butter.
Add the flour, baking powder, and graham cracker crumbs. Whisk the dry and wet ingredients together until just combined. Make sure there are no hidden pockets of creamed sugar or dry flour in the cookie dough.
Divide the cookie dough into 12 evenly sized balls and roll them in your hands so they are smooth and uniform. Line the cookie sheet with the cookie dough, leaving about 2 inches between each cookie. Bake for 12 minutes.
Right after you take your cookies out of the oven, use a small glass or bowl to push into the center of each cookie. This will create the indent that will hold your key lime pie filling.
Allow the cookies to cool completely before you fill them. You can work on making your filling as they cool.
In a medium sized bowl, whisk together the sweetened condensed milk, powdered sugar, and lime juice. Chill the key lime pie filling in the fridge for 20 minutes. Whip the cream, vanilla, and sugar together for a few minutes, or until it begins to form stiff peaks.
Fill each cookie with a spoonful of the key lime pie filling and then top with a dollop of freshly whipped cream. Sprinkle with a pinch of lime zest, if desired. Serve and enjoy!
Notes
Store your lime cookies in an airtight container in the fridge for up to 5 days. For longer storage, freeze the cookies in a single layer on a baking sheet until solid. Then transfer them to a freezer-safe container or resealable bag. Thaw at room temperature before serving.