Key Lime Pie Bars are a delightful twist on the classic dessert that many of us know and love. Originating from the Florida Keys, this refreshing treat captures the essence of summer with its zesty lime flavor and creamy texture. I remember the first time I tasted a Key Lime Pie; the perfect balance of tartness and sweetness left a lasting impression on my palate. These bars take that beloved pie and transform it into a convenient, easy-to-serve format, making them perfect for gatherings or a simple weeknight dessert.
What I adore about Key Lime Pie Bars is their versatility; they are not only delicious but also incredibly easy to make. The buttery graham cracker crust complements the smooth, tangy filling beautifully, creating a delightful contrast in every bite. Whether youre a long-time fan of Key Lime Pie or trying it for the first time, these bars are sure to become a favorite in your dessert repertoire. Join me as we dive into this recipe that brings the taste of the tropics right to your kitchen!
Ingredients:
- For the crust:
- 1 ½ cups graham cracker crumbs
- ½ cup granulated sugar
- ½ cup unsalted butter, melted
- 1 teaspoon vanilla extract
- For the filling:
- 1 can (14 ounces) sweetened condensed milk
- ½ cup sour cream
- ¾ cup fresh key lime juice (about 6-8 key limes)
- 1 tablespoon lime zest (from about 2 key limes)
- 2 large egg yolks
- For the topping:
- 1 cup heavy whipping cream
- 2 tablespoons powdered sugar
- 1 teaspoon vanilla extract
- Additional lime zest for garnish (optional)
Preparing the Crust
- Preheat your oven to 350°F (175°C). This is the perfect temperature for baking the crust to a golden brown.
- In a medium mixing bowl, combine the graham cracker crumbs and granulated sugar. Stir them together until they are well mixed.
- Pour in the melted butter and vanilla extract. Mix everything together until the crumbs are evenly coated and the mixture resembles wet sand.
- Press the crumb mixture firmly into the bottom of a 9×9-inch baking dish. I like to use the bottom of a measuring cup to really pack it down. This helps create a solid base for the bars.
- Bake the crust in the preheated oven for about 10 minutes, or until its lightly golden. Keep an eye on it to prevent burning!
- Once baked, remove the crust from the oven and let it cool while you prepare the filling.
Preparing the Filling
- In a large mixing bowl, combine the sweetened condensed milk and sour cream. Use a whisk to blend them together until smooth and creamy.
- Add the fresh key lime juice and lime zest to the mixture. Whisk again until everything is well combined. The key lime juice is what gives these bars their signature tangy flavor!
- Next, add the egg yolks to the mixture. Make sure to separate the yolks from the whites, as we only need the yolks for this recipe. Whisk until the egg yolks are fully incorporated and the mixture is smooth.
- Once the filling is ready, pour it over the cooled crust, spreading it evenly with a spatula.
- Bake the bars in the oven for an additional 15-20 minutes, or until the filling is set but still slightly jiggly in the center. It will firm up as it cools.
- After baking, remove the bars from the oven and let them cool at room temperature for about 30 minutes. Then, transfer them to the refrigerator to chill for at least 2 hours, or until completely set.
Preparing the Topping
- Once the bars are chilled and set, its time to prepare the topping. In a large mixing bowl, pour in the heavy whipping cream.
- Using an electric mixer, beat the cream on medium-high speed until it starts to thicken. This usually takes about 2-3 minutes.
- Add the powdered sugar and vanilla extract to the whipped cream. Continue to beat until stiff peaks form. This means that when you lift the beaters out of the cream, the peaks should stand up straight without drooping.
- Once the whipped cream is ready, use a spatula to spread it evenly over the chilled key lime filling. You can also pipe it on for a more decorative look if you prefer!
- If desired, sprinkle some additional lime zest on top for a pop of color and extra flavor.
Assembling and Serving
- After youve added the whipped cream topping, cover the baking dish with plastic wrap and return it to the refrigerator for at least another hour. This helps the flavors meld together beautifully.

Conclusion:
In summary, these Key Lime Pie Bars are an absolute must-try for anyone who loves a refreshing dessert that perfectly balances tartness and sweetness. The creamy filling, combined with the buttery graham cracker crust, creates a delightful treat that is sure to impress your family and friends. Whether you’re hosting a summer barbecue, celebrating a special occasion, or simply craving something delicious, these bars are the perfect choice. For serving suggestions, I recommend garnishing your Key Lime Pie Bars with a dollop of whipped cream and a sprinkle of lime zest for an extra pop of flavor. You can also experiment with variations by adding a hint of coconut for a tropical twist or incorporating fresh berries on top for a burst of color and taste. The possibilities are endless! I encourage you to give this recipe a try and experience the zesty goodness for yourself. Once youve made these Key Lime Pie Bars, Id love to hear about your experience! Share your thoughts, any variations you tried, or even a photo of your delicious creation. Lets spread the joy of baking together! Print
Key Lime Pie Bars: The Ultimate Recipe for a Refreshing Dessert Delight
- Total Time: 180 minutes
- Yield: 16 bars 1x
Description
Enjoy the zesty delight of Key Lime Pie Bars featuring a buttery graham cracker crust, a creamy key lime filling, and a fluffy whipped cream topping. Perfect for any occasion, these bars are a refreshing treat that combines tangy flavors with a sweet finish.
Ingredients
- 1 ½ cups graham cracker crumbs
- ½ cup granulated sugar
- ½ cup unsalted butter, melted
- 1 teaspoon vanilla extract
- 1 can (14 ounces) sweetened condensed milk
- ½ cup sour cream
- ¾ cup fresh key lime juice (about 6–8 key limes)
- 1 tablespoon lime zest (from about 2 key limes)
- 2 large egg yolks
- 1 cup heavy whipping cream
- 2 tablespoons powdered sugar
- 1 teaspoon vanilla extract
- Additional lime zest for garnish (optional)
Instructions
- Preheat your oven to 350°F (175°C).
- In a medium mixing bowl, combine the graham cracker crumbs and granulated sugar. Stir until well mixed.
- Pour in the melted butter and vanilla extract. Mix until the crumbs are evenly coated and resemble wet sand.
- Press the crumb mixture firmly into the bottom of a 9×9-inch baking dish.
- Bake the crust for about 10 minutes, or until lightly golden. Let it cool while preparing the filling.
- In a large mixing bowl, combine the sweetened condensed milk and sour cream. Whisk until smooth and creamy.
- Add the fresh key lime juice and lime zest. Whisk until well combined.
- Add the egg yolks and whisk until fully incorporated and smooth.
- Pour the filling over the cooled crust, spreading it evenly.
- Bake for an additional 15-20 minutes, or until the filling is set but slightly jiggly in the center. Let cool at room temperature for 30 minutes, then refrigerate for at least 2 hours.
- In a large mixing bowl, pour in the heavy whipping cream.
- Beat the cream on medium-high speed until it starts to thicken (about 2-3 minutes).
- Add the powdered sugar and vanilla extract. Continue to beat until stiff peaks form.
- Spread the whipped cream evenly over the chilled key lime filling or pipe it on for decoration.
- Optionally, sprinkle additional lime zest on top.
- After adding the whipped cream topping, cover the baking dish with plastic wrap and return it to the refrigerator for at least another hour to meld the flavors.
Notes
- For a more intense lime flavor, adjust the amount of lime juice and zest to your preference.
- These bars can be made a day in advance and stored in the refrigerator.
- Prep Time: 30 minutes
- Cook Time: 30 minutes
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