Gemini said

I wanted to recreate my favorite bakery cookies, and these key lime cookies were at the top of the list. I couldn't stop thinking about that creamy, citrusy filling on a graham cracker base until I finally nailed the recipe. It took a few tries to get the balance right, but they're finally exactly how I remember them.

A plate of six cookies, each topped with a dollop of white cream and a lime slice, rests on a marble surface, accompanied by halved limes and a bottle of milk.

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This cookie has quickly become one of my most requested recipes. The buttery graham cracker base, the cool, creamy key lime filling, and that little dollop of whipped topping on top, it all comes together perfectly. If you’re looking to make something bakery-worthy at home, this is the one to try.

The Cookie That Belongs on Every Summer Table

Gemini said

These cookies just scream summer. Imagine a lazy afternoon with a plate of these on the table and that fresh, citrusy smell everywhere. They're exactly what you want for a backyard hangout or just a little treat for yourself when it's warm out. The frosting is creamy, but that bit of tang keeps them feeling light.

Ingredients

Labeled baking ingredients on a marble surface include butter, flour, brown sugar, vanilla, salt, baking powder, baking soda, cream cheese, lime juice, lime zest, condensed milk, milk, sugar, egg, and graham crackers.

How to make Crumbl Copycat Key Lime Cookies

Start by preheating your oven to 350°F. While it warms up, line a couple of baking sheets with parchment paper and set them aside.

Next, toss your softened butter and both sugars into the stand mixer with the paddle attachment and cream them together until nice and fluffy. A stand mixer does all the heavy lifting here, and that paddle attachment is your best friend for getting a nice, smooth base without overworking the dough. Once everything looks good, add in your egg and vanilla, and mix until combined.

Butter and sugars together in a mixing bowl on a gray marble surface.
Cream the butter and sugars until fluffy.
Mix in the egg and vanilla.

Then add the flour, one cup of the crushed graham crackers, salt, baking soda, and baking powder. Mix until just combined, and don't forget to scrape down the sides of the bowl with a spatula as you go.

Add the flour, crushed graham crackers, salt, baking soda, and baking powder.
Mix until just combined.

Now for the fun part. Scoop out your dough using an ice cream scoop and roll each ball in the remaining crushed graham crackers. Place them on your prepared baking sheets and use the back of a tablespoon to press a little indent into the center of each one.

Scoop the dough and roll in graham crackers.
Indented cookie dough pieces on top of the gray marble surface.
Press indent into center of each.

Bake for 10 minutes, then pull them out and use the bottom of a half-cup measuring cup to press those indents down a little deeper. Pop them back in for another 2 to 4 minutes until the centers are set. Don't worry if they still feel a little soft. They will firm up as they cool, so just let them sit for a bit before moving on.

Once your cookies are fully cooled, it is time for the filling. Beat the softened cream cheese and sweetened condensed milk together in your stand mixer until smooth, then mix in the key lime juice and zest. A microplane zester works great here to get that fine zest that mixes right into the filling without any chunks. Transfer it into a piping bag, snip off the tip, and pipe a generous amount into the center of each cookie.

Beat the cream cheese and condensed milk.
Mix in the key lime juice and zest.
Pipe the filling into each cookie.

The last step is the hardest part, honestly. Stick the cookies in the fridge for about two hours until the filling is set. Once they are nice and firm, top them with a little whipped topping and a slice of key lime if you like, and you are done.

Serving suggestions

These cookies are great on their own, but they’re even better when you make a moment out of them. They pair perfectly with a glass of sparkling lemonade or a refreshing mint iced tea. For a summer dinner, serve them after something savory like Seared Salmon with Avocado Salsa. If you're keeping it casual, Jalapeño Popper Grilled Cheese adds a spicy, crispy contrast, and Italian Herbed Chicken and Veggie Bake Foil Packs are a solid choice for the main dish.

Close-up of six cookies on a dark plate, each topped with cream and a lime slice. The surface appears rustic, with a textured napkin nearby.

Storage tips

Keep leftover cookies in an airtight container in the fridge to maintain the creamy texture. They’ll stay fresh for up to three days. If you need to stack them, place parchment paper between layers to prevent sticking. To enjoy later, let them sit at room temperature for a few minutes before serving.

Southern farewell

These Crumbl Copycat Key Lime Cookies basically taste like a mix of Southern comfort and fresh citrus. Every time I make them, I think of warm afternoons, good company, and laid-back gatherings. I hope you give them a try and share them with the people you enjoy the most.

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A plate of six cookies, each topped with a dollop of white cream and a lime slice, rests on a marble surface, accompanied by halved limes and a bottle of milk.

Crumbl Copycat Key Lime Cookies

Mandy Applegate
Crumbl Copycat Key Lime Cookies bring a fresh citrus twist to Southern baking. These soft, graham-crusted cookies hold a creamy, tangy filling that melts in your mouth. They remind me of lazy afternoons when the kitchen smelled like sunshine and dessert was worth the wait.
Prep Time 30 minutes
Cook Time 14 minutes
Chill time 2 hours
Total Time 2 hours 44 minutes
Course Dessert
Cuisine American
Servings 10 cookies
Calories 358 kcal

Ingredients
  

For the cookie base

  • ½ cup unsalted butter
  • ½ cup sugar
  • ¼ cup brown sugar
  • 1 egg
  • 1 teaspoon vanilla
  • 1 ½ cup flour
  • 1 ½ cup graham crackers crushed and divided
  • ½ teaspoon salt
  • ½ teaspoon baking soda
  • ½ teaspoon baking powder

For the filling

  • 5 ounces cream cheese softened
  • cup sweetened condensed milk
  • ¼ cup key lime juice
  • 1 tablespoon key lime zest

Optional toppings

  • Whipped topping
  • Key lime slices

Instructions
 

  • Preheat the oven to 350°F. Line two baking sheets with parchment paper and set them aside.
  • In a stand mixer with the paddle attachment, beat the softened butter, sugar, and brown sugar until smooth.
  • Mix in the egg and vanilla until fully combined.
  • Add the flour, 1 cup crushed graham crackers, salt, baking soda, and baking powder. Mix until the dough comes together, scraping the bowl as needed.
  • Scoop the dough with an ice cream scoop, then roll each ball in the remaining crushed graham crackers. Place them on the prepared baking sheets.
  • Use the back of a tablespoon to press a small indent in the center of each dough ball.
  • Bake for 10 minutes. Remove from the oven and use the bottom of a ½ cup measuring cup to press the centers deeper. Return to the oven for 2–4 more minutes, until the centers are set.
  • Let the cookies cool on the baking sheet before adding the filling.
  • In a stand mixer, beat softened cream cheese and sweetened condensed milk until smooth. Mix in the key lime juice and zest until combined.
  • Transfer the filling to a piping bag, snip the tip, and pipe into the center of each cooled cookie.
  • Refrigerate for at least 2 hours or until the filling is set. Top with whipped cream and a lime slice if desired.

Notes

  • Make sure the cream cheese is fully softened before you begin, or the filling will turn out lumpy.
  • Do not skip the two-hour chill. The filling needs time to set so the cookies hold their shape.

Nutrition

Serving: 1 cookieCalories: 358kcalCarbohydrates: 47gProtein: 5gFat: 17gSaturated Fat: 10gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gTrans Fat: 0.4gCholesterol: 59mgSodium: 348mgPotassium: 125mgFiber: 1gSugar: 25gVitamin A: 529IUVitamin C: 2mgCalcium: 79mgIron: 2mg

A Note on Nutritional Information

Nutritional information for this recipe is provided as a courtesy and is calculated based on available online ingredient information. It is only an approximate value. The accuracy of the nutritional information for any recipe on this site cannot be guaranteed.

Keyword Crumbl copycat key lime cookies, Crumbl key lime cookies, Easy Crumbl copycat key lime cookie recipe
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