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+ servings
Key lime cooler cookies piled on a white plate

Key Lime Cooler Cookies

Key Lime Cooler Cookies are soft, buttery, and bursting with key lime flavor!

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  • 3 cups all purpose flour
  • 1/2 teaspoon baking powder
  • 1/4 teaspoon salt
  • 2 sticks unsalted butter softened
  • 3 cups powdered sugar divided
  • 1 large egg yolk
  • 1/4 cup fresh key lime juice regular lime juice is ok
  • 1 tablespoon key lime zest


  • Preheat the oven to 350 degrees. Line two baking sheets with parchment paper.
  • In a small bowl, whisk the flour, baking powder, and salt; set aside.
    3 cups all purpose flour, 1/2 teaspoon baking powder, 1/4 teaspoon salt
  • In a large bowl, cream the butter and 1 cup of powdered sugar until light and fluffy, about 2-3 minutes. On low speed, mix in the egg yolk, lime juice and zest until incorporated.
    2 sticks unsalted butter, 1 large egg yolk, 1/4 cup fresh key lime juice, 1 tablespoon key lime zest, 3 cups powdered sugar
  • Add the dry ingredients, mixing on low speed just until combined. The dough will be very crumbly. Using your hands, knead the dough gently until it comes together and forms a ball.
  • Roll the dough into 1" sized balls and place 1" apart on the prepared baking sheets.
  • Bake at 350 degrees for 15-20 minutes, or until lightly golden brown. Check for doneness after 15 minutes, as oven temperatures do vary.
  • Place the baking sheet on a wire rack. While the cookies are still warm, roll them in the remaining 2 cups of powdered sugar, and place back on the baking sheet to cool completely. Sift the remaining powdered sugar over the tops of the cookies. Store in an airtight container for up to 2 weeks.


  • Make sure your key limes are room temperature so that you get the maximum juice out of them! One 1 lb. bag of key limes normally yields 3/4 cup of juice. Freeze the rest! Prep time includes zesting and juicing the limes.
  • These cookies actually get better as they sit. This makes them a great cookie to ship to relatives!  Store in an air tight container for up to 2 weeks.


Serving: 1cookie, Calories: 124kcal, Carbohydrates: 18g, Protein: 1g, Fat: 5g, Saturated Fat: 3g, Cholesterol: 19mg, Sodium: 23mg, Potassium: 15mg, Fiber: 1g, Sugar: 10g, Vitamin A: 164IU, Vitamin C: 1mg, Calcium: 7mg, Iron: 1mg

Nutrition is estimated using a food database and is only intended to be used as a guideline for informational purposes.

Did you try this recipe?Be sure to tag @flavorthemoments with the hashtag #flavorthemoments on Instagram so I can see what you made!