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Delicious Key Lime Cookies for a Refreshing Summer Treat

Published: Oct 7, 2025 by Julie Chen · This post may contain affiliate links · Leave a Comment

"Crunch! That’s the sound that sparked my love for baking these irresistible Key Lime Cookies. With summer in full swing, nothing feels quite as refreshing as a treat that captures the essence of a classic key lime pie. These gluten-free, nut-free, and eggless delights are soft, chewy, and dotted with crunchy graham cracker pieces that enhance every tangy bite. Not only do they take just a few simple steps to make, but they also cater to everyone at your gathering—perfect for those who avoid gluten or eggs. So, are you ready to transport your taste buds to a sunny beach with these scrumptious cookies? Let’s dive in!"

Why are Key Lime Cookies a must-try?

Irresistible, refreshing flavors: These Key Lime Cookies deliver a burst of citrus that awakens your palate, reminiscent of summer days.
Adaptable for all diets: Gluten-free, nut-free, and eggless, these cookies cater to diverse dietary needs without sacrificing flavor.
Quick and easy prep: With simple steps, you'll have a delightful treat ready in no time, making them perfect for last-minute summer gatherings.
Crowd-pleasing appeal: These cookies are sure to impress family and friends—great for a dessert table or as a sweet gift!
Snack with a twist: Enjoy them on their own or paired with a scoop of coconut ice cream for an extra refreshing treat.

Key Lime Cookies Ingredients

For the Dough
• Gluten-Free Flour – Provides structure; use a 1:1 blend with xanthan gum for best results.
• Baking Powder – Helps the cookies to rise and achieve a soft texture.
• Kosher Salt – Enhances the sweetness of the cookies.
• Unsalted Butter or Vegan Baking Stick – Adds richness and moisture; use a vegan stick for dairy-free options.
• Granulated Sugar – Sweetens the cookies and balances the tartness of lime.
• Sweetened Condensed Milk or Sweetened Condensed Coconut Milk – Adds creaminess; use coconut milk for vegan cookies.
• Key Lime Zest – Provides the vibrant flavor; zest from about 4 limes is essential for Key Lime Cookies.
• Key Lime Juice – Fresh juice is crucial for authenticity and tang; juice from about 8 limes.

For the Crunch
• Gluten-Free Graham Crackers – Adds crunch and connects to key lime pie essence; chop into small pieces.
• Graham Cracker Chunks – For topping; adds extra texture and crunch.

For the Glaze
• Cream Cheese Glaze – Drizzle on top for a sweet finish that enhances the cookie experience.

Step‑by‑Step Instructions for Irresistible Gluten-Free Key Lime Cookies

Step 1: Prepare Ingredients
Start by zesting and juicing 8 key limes into a bowl, ensuring you capture their vibrant essence. Next, chop ¾ cup of gluten-free graham crackers into small pieces for that delightful crunch. Gather your other ingredients, including gluten-free flour, butter, and sweetened condensed milk, so you have everything ready for the mixing process.

Step 2: Mix Dry Ingredients
In a separate mixing bowl, combine 2 cups of gluten-free flour, 1 teaspoon of baking powder, and ½ teaspoon of kosher salt. Whisk the mixture together until it’s well combined and aerated. This step is critical for the perfect texture of your Key Lime Cookies, as it helps to ensure even distribution of the leavening agent and salt.

Step 3: Cream Butter and Sugar
In a large mixing bowl, cream ½ cup of unsalted butter or a vegan baking stick with 1 cup of granulated sugar. Use an electric mixer to beat the mixture on medium speed for about 3-5 minutes, or until it’s light and fluffy. This creates a lovely base that adds richness to your Key Lime Cookies, setting the stage for the added flavors.

Step 4: Combine Ingredients
Once the butter and sugar are fluffy, mix in ½ cup of sweetened condensed milk, along with the prepared lime zest and juice. Continue mixing until everything is well incorporated and forms a smooth batter. The fresh key lime juice will infuse your cookies with that signature tang, making them irresistibly refreshing.

Step 5: Incorporate Dry Mixture
Gradually fold the flour mixture into the wet ingredients using a spatula. Mix until just combined, being careful not to overmix. Gently fold in the chopped gluten-free graham crackers to add the desired texture to your cookies. You should have a sticky, dough-like consistency that shapes well after chilling.

Step 6: Chill Dough
Cover the bowl tightly with plastic wrap and refrigerate the cookie dough for at least 1 hour. Chilling the dough is essential to prevent excessive spreading while baking, so take this time to clean up your workspace or gather your baking tools. The dough will firm up, making it easier to scoop and shape.

Step 7: Preheat Oven & Scoop
Preheat your oven to 325°F (160°C) while the dough chills. Once ready, use a cookie scoop to portion out the dough, rolling it into balls, and then flatten them slightly into discs. Roll each disc in key lime sugar for a sweet coating that adds flavor and a lovely appearance to your Key Lime Cookies.

Step 8: Bake Cookies
Place your cookies on a parchment-lined baking sheet, leaving enough space between each for spreading. Bake in the preheated oven for about 8 minutes, or until the edges are lightly golden. Keep an eye on them, and if they spread too much, gently reshape them as they come out of the oven using a spatula.

Step 9: Cool & Glaze
Allow the baked cookies to cool on a wire rack for a few minutes. While they cool, prepare to add a delightful finish by drizzling cream cheese glaze over the top. Don’t forget to sprinkle graham cracker chunks for an extra crunch before serving. Your batch of Key Lime Cookies is now complete and ready for everyone to enjoy!

Key Lime Cookies Variations & Substitutions

Feel free to experiment with these variations to make the recipe uniquely yours, adding your personal touch!

  • Dairy-Free: Substitute unsalted butter with a vegan baking stick and use sweetened condensed coconut milk.
    This not only accommodates dietary needs but also brings a lovely coconut flavor that complements the key lime beautifully.

  • Nut-Free Crunch: Instead of graham crackers, use crushed gluten-free pretzels for a salty-sweet contrast.
    The added crunch and unique flavor offer an exciting twist, perfect for adventurous palates.

  • Coconut Flavor Boost: Add ½ cup of shredded unsweetened coconut to the batter for a tropical enhancement.
    This addition not only adds texture but makes every bite feel like a mini beach vacation!

  • Citrus Twist: For an extra layer of flavor, mix in 1 tablespoon of lemon or orange zest along with the key lime.
    This brightens the taste, creating a delightful citrus medley that’s hard to resist.

  • Chocolate Variation: Replace graham crackers with dairy-free chocolate chips for a rich, indulgent treat.
    The combination of tangy lime and sweet chocolate will leave your taste buds dancing.

  • Sugar Substitute: Use coconut sugar or a sugar alternative if you’re looking to cut back on refined sugars.
    This creates a slightly different flavor profile while still maintaining the beloved sweetness.

  • Heat It Up: Add a pinch of cayenne pepper or some finely chopped jalapeños to the dough for an unexpected heat.
    Pairing the cool lime with a spicy kick can be a sensational surprise for adventurous eaters.

To complement your delightful Key Lime Cookies, consider serving them alongside a refreshing homemade iced tea or a scoop of coconut ice cream for that extra special touch!

How to Store and Freeze Key Lime Cookies

Room Temperature: Store the cookies in an airtight container at room temperature for up to 3 days to maintain their soft and chewy texture.

Fridge: If you want to keep them fresh a bit longer, refrigerate the cookies in an airtight container for up to 5 days.

Freezer: To freeze, wrap unbaked cookie dough tightly in plastic wrap and place it in a freezer bag. You can store it for up to 30 days.

Reheating: When ready to enjoy, simply bake the frozen dough without thawing at 325°F (160°C) for about 10-12 minutes until golden.

Expert Tips for Key Lime Cookies

  • Chill the Dough: Always refrigerate your cookie dough for at least 1 hour to prevent spreading during baking; this ensures your Key Lime Cookies hold their shape.

  • Fresh Ingredients Matter: Use freshly squeezed key lime juice and zest for an authentic tangy flavor. Bottled juice lacks the vibrant taste of fresh citrus.

  • Avoid Overmixing: When combining the wet and dry ingredients, mix just until they come together. Overmixing can lead to tough cookies instead of the desired chewy texture.

  • Reshape After Baking: If your cookies spread too much, gently reshape them immediately after taking them out of the oven using a spatula—it helps maintain that perfect round shape.

  • Flour Variability: Different gluten-free flour blends may yield different results. Stick to a 1:1 blend with xanthan gum for optimal texture in your Key Lime Cookies.

What to Serve with Irresistible Gluten-Free Key Lime Cookies

When it comes to complementing these delightful cookies, think of bright, refreshing treats that enhance their vibrant flavors.

  • Coconut Ice Cream: The creamy coconut ice cream perfectly balances the tartness of the cookies, creating a dreamy dessert duo. Pairing adds a tropical twist that feels like a beach getaway.

  • Fresh Fruit Salad: A colorful mix of seasonal fruits brings a burst of sweetness and freshness, contrasting beautifully with the cookies’ citrus flavor. Pineapple and berries are especially refreshing.

  • Iced Green Tea: The subtle notes of grassy green tea cleanse the palate between cookie bites, offering a refreshing accompaniment. Serve with a splash of lemon for an extra zing.

  • Sparkling Lemonade: The fizz and sweetness of sparkling lemonade make it a refreshing drink that echoes the cookies' tangy flavor. Complete your summer vibe with this bubbly thirst-quencher.

  • Key Lime Pie Bars: For the ultimate key lime experience, serve a small slice of key lime pie bars alongside the cookies. This layers the flavors while showcasing your love for this piquant citrus.

  • Watermelon Sorbet: Cool and refreshing, watermelon sorbet is light and pairs seamlessly with the cookies, enhancing their summery vibe. A scoop of this sorbet brings an enjoyable contrast in flavors and temperatures.

  • Chilled Herbal Tea: A refreshing glass of chilled herbal tea, like mint, complements the cookies with its soothing aroma and taste. It's the ideal drink for a leisurely summer afternoon.

  • Creamy Yogurt Dip: A lightly sweetened yogurt dip adds a delightful creaminess that pairs beautifully with the chewy cookies. Consider adding lime zest to the dip for a lovely touch.

Make Ahead Options

These Key Lime Cookies are a fantastic option for meal prep! You can prepare the cookie dough up to 24 hours in advance by mixing all the ingredients and chilling it as directed. Just wrap the dough tightly in plastic wrap before refrigerating to maintain its moisture and prevent any drying out. You can also scoop and shape the cookies into discs, rolling them in key lime sugar, and then refrigerate them for up to 3 days before baking. When ready to enjoy, simply bake them directly from the fridge, adding an extra minute or two to the baking time. This way, you’ll have deliciously fresh cookies with minimal effort, perfect for busy summer days!

Key Lime Cookies Recipe FAQs

How do I choose the best key limes for my cookies?
Absolutely! Select key limes that are firm and heavy for their size, indicating juiciness. Look for smooth skin without dark spots. Approximately 8 key limes should yield enough juice and zest for this recipe.

How should I store my Key Lime Cookies to keep them fresh?
To keep your cookies at their best, store them in an airtight container at room temperature for up to 3 days. If you want to enjoy them longer, refrigerate them for up to 5 days, ensuring freshness without drying them out.

Can I freeze the unbaked Key Lime Cookies dough?
Very! To freeze, wrap the unbaked dough tightly in plastic wrap, then place it in a freezer bag. The dough can be stored for up to 30 days. When ready to bake, simply drop the frozen dough balls onto a baking sheet, and bake at 325°F (160°C) for about 10-12 minutes without thawing.

What if my cookies spread too much while baking?
If your cookies spread too much, don’t fret! Reshape them immediately after pulling them from the oven using a spatula. If you notice excessive spreading consistently, try chilling the dough for a longer period before baking to prevent this from happening.

Are Key Lime Cookies suitable for those with allergies?
These cookies are gluten-free, nut-free, and eggless, making them an excellent choice for those with common dietary restrictions. However, always double-check ingredients, especially for cross-contamination, if you have severe allergies.

Key Lime Cookies

Delicious Key Lime Cookies for a Refreshing Summer Treat

Enjoy refreshing Key Lime Cookies that are gluten-free, nut-free, and eggless, perfect for summer gatherings.
Print Recipe Pin Recipe
Prep Time 30 minutes mins
Cook Time 8 minutes mins
Chill Time 1 hour hr
Total Time 1 hour hr 38 minutes mins
Servings: 24 cookies
Course: Dessert
Cuisine: American
Calories: 120
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Dough
  • 2 cups Gluten-Free Flour Use a blend with xanthan gum for best results.
  • 1 teaspoon Baking Powder Helps the cookies to rise.
  • 0.5 teaspoon Kosher Salt Enhances the sweetness of the cookies.
  • 0.5 cups Unsalted Butter or Vegan Baking Stick Adds richness; use vegan for dairy-free.
  • 1 cups Granulated Sugar Sweetens the cookies.
  • 0.5 cups Sweetened Condensed Milk or Sweetened Condensed Coconut Milk For creaminess; use coconut for vegan.
  • 4 zests Key Lime Zest From about 4 limes.
  • 8 tablespoons Key Lime Juice Fresh juice is crucial for authenticity.
For the Crunch
  • 0.75 cups Gluten-Free Graham Crackers Chopped into small pieces.
  • 1 cup Graham Cracker Chunks For topping.
For the Glaze
  • 1 cup Cream Cheese Glaze Drizzle on top for a sweet finish.

Equipment

  • mixing bowls
  • Electric Mixer
  • Cookie Scoop
  • baking sheet
  • Parchment Paper

Method
 

Step-by-Step Instructions
  1. Start by zesting and juicing 8 key limes into a bowl, ensuring you capture their vibrant essence.
  2. In a separate bowl, combine 2 cups of gluten-free flour, 1 teaspoon of baking powder, and 0.5 teaspoon of kosher salt; whisk until well combined.
  3. Cream 0.5 cup of butter with 1 cup of sugar using an electric mixer for about 3-5 minutes until light and fluffy.
  4. Mix in 0.5 cup of sweetened condensed milk, along with lime zest and juice until smooth.
  5. Gradually fold the dry mixture into the wet ingredients until just combined, then fold in chopped graham crackers.
  6. Cover and refrigerate dough for at least 1 hour.
  7. Preheat your oven to 325°F (160°C); scoop, roll, and flatten dough into discs, rolling in key lime sugar.
  8. Bake on a lined baking sheet for about 8 minutes until edges are lightly golden.
  9. Cool on a rack, then drizzle with glaze and sprinkle graham cracker chunks before serving.

Nutrition

Serving: 1cookieCalories: 120kcalCarbohydrates: 14gProtein: 1gFat: 6gSaturated Fat: 4gMonounsaturated Fat: 1gCholesterol: 15mgSodium: 60mgPotassium: 30mgSugar: 8gVitamin A: 200IUVitamin C: 2mgCalcium: 10mgIron: 0.5mg

Notes

Chill the dough to maintain shape while baking. Use fresh lime juice for the best taste. Avoid overmixing for chewy cookies.

Tried this recipe?

Let us know how it was!

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Welcome, Fellow Food Adventurer!

Hi, I'm Julie! I'm a passionate home cook who believes every meal should be an adventure. Join me as I share tested recipes, kitchen stories, and culinary discoveries that will inspire your next delicious creation.

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