Key Lime Pie Bars
These key lime pie bars are a delightful treat that beautifully combines tartness and creaminess, making them perfect for any occasion. Whether you’re hosting a summer barbecue, celebrating a birthday, or simply craving a sweet dessert, these bars will impress everyone with their refreshing flavor. They are easy to make and can be served chilled straight from the fridge, offering a cool relief on hot days!
Why You’ll Love This Recipe
- Simple Preparation: With just a few steps, you can whip up these delicious bars without any fuss.
- Refreshing Flavor: The combination of key lime juice and zest gives these bars their signature tangy taste that is irresistible.
- Perfect for Sharing: This recipe yields 16 squares, making it great for parties and gatherings.
- Versatile Dessert: These bars can be enjoyed at any time of year, but they shine during summer months.
- No-Bake Option: You can chill these bars instead of baking them for an even easier dessert experience.
Tools and Preparation
Before getting started with your key lime pie bars, gather the necessary tools to make the process smooth and enjoyable.
Essential Tools and Equipment
- Food processor
- Mixing bowls
- Whisk
- 9×9 inch baking pan
- Measuring cups and spoons
Importance of Each Tool
- Food processor: Perfect for crushing the vanilla wafer cookies into fine crumbs for the crust.
- Mixing bowls: Essential for combining ingredients seamlessly.
- Whisk: Helps incorporate air into the mixture, ensuring a light texture in your filling.
Ingredients
These perfectly tart and tangy key lime pie bars are a breeze to make and are delicious served straight from the fridge on a hot summer day!
For the Crust
- 2 cups vanilla wafer cookies, finely ground (250 g)
- 5 tablespoons unsalted butter, melted
- 2 tablespoons light brown sugar
For the Filling
- 1 tablespoon lime zest, packed (6-7 key limes)
- 5 large egg yolks
- 22 ounces sweetened condensed milk (1 14-ounce can and ¾ cup from 2nd can)
- 1 cup freshly squeezed lime juice
For the Topping
- 1 cup heavy whipping cream
- 2 tablespoons powdered sugar
How to Make Key Lime Pie Bars
Step 1: Prepare the Crust
- Preheat your oven to 350°F (175°C).
- In a food processor, combine the finely ground vanilla wafer cookies, melted butter, and light brown sugar.
- Pulse until well mixed.
- Press this mixture evenly into the bottom of a greased 9×9 inch baking pan.
- Bake in the preheated oven for about 10 minutes until set. Let cool.
Step 2: Make the Filling
- In a mixing bowl, whisk together the lime zest and egg yolks until combined.
- Gradually add in sweetened condensed milk while whisking continuously until smooth.
- Stir in freshly squeezed lime juice until fully incorporated.
Step 3: Bake the Filling
- Pour the filling over the cooled crust.
- Bake for an additional 15-20 minutes or until set but still slightly jiggly in the center.
- Remove from oven and let it cool to room temperature before chilling in the refrigerator for at least 4 hours.
Step 4: Prepare Topping & Serve
- In another mixing bowl, whip heavy cream with powdered sugar until stiff peaks form.
- Spread or pipe whipped cream over chilled key lime pie bars before slicing into squares.
- Serve cold and enjoy!
These key lime pie bars are sure to become a favorite dessert!
How to Serve Key Lime Pie Bars
Key lime pie bars are a delightful treat that can be enjoyed in various ways. Whether you’re hosting a summer gathering or looking for a refreshing dessert, these bars can be served with a twist to enhance their tangy flavor.
With Fresh Whipped Cream
- Top each bar with a dollop of freshly whipped cream for added richness and texture.
Garnished with Lime Slices
- Add thin slices of lime on top to reinforce the citrus flavor and make the presentation pop.
Paired with Fresh Berries
- Serve alongside fresh strawberries or blueberries for a colorful and delicious contrast to the tartness of the bars.
Drizzled with Chocolate Sauce
- A light drizzle of chocolate sauce can complement the key lime flavor and add an indulgent touch.
Chilled in Individual Cups
- For a fun twist, cut the bars into squares and serve them in individual cups for easy handling at parties.

How to Perfect Key Lime Pie Bars
Perfecting key lime pie bars is all about balancing flavors and achieving the right texture. Follow these tips to ensure your dessert turns out perfectly every time.
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Use Fresh Limes: Freshly squeezed lime juice provides the best flavor. Bottled juice lacks the brightness that fresh limes bring.
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Chill Thoroughly: Allow your bars to chill in the fridge for at least three hours. This helps them set properly and enhances their refreshing taste.
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Don’t Overbake: Keep an eye on your bars while baking. They should remain slightly jiggly in the center when you take them out of the oven.
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Add Zest: Including lime zest not only boosts flavor but also adds a lovely texture to your filling.
Best Side Dishes for Key Lime Pie Bars
Key lime pie bars can be complemented by several side dishes that enhance their deliciousness. Pairing them with light and refreshing sides will create a balanced meal or snack experience.
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Fruit Salad: A mix of seasonal fruits adds freshness and color, making it a perfect accompaniment.
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Coconut Sorbet: The creamy coconut flavor pairs wonderfully with key lime, adding another layer of tropical taste.
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Minted Cucumber Salad: This refreshing salad provides a cool contrast to the tartness of the bars.
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Grilled Pineapple: The sweet char from grilled pineapple enhances the citrus notes in your dessert.
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Chocolate-Dipped Strawberries: A classic pairing that offers sweetness which balances out the tartness of key lime pie bars.
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Lemonade: A chilled glass of lemonade echoes similar citrus flavors while keeping things light and refreshing.
Common Mistakes to Avoid
Making Key Lime Pie Bars can be simple, but there are common pitfalls to watch out for. Here are some mistakes to avoid for the best results.
- Incorrect crust texture: If you grind the vanilla wafer cookies too coarsely, the crust won’t hold together well. Aim for a fine crumb for a firm base.
- Overbaking: Baking for too long can lead to a rubbery texture. Keep an eye on them and remove when the center is set but still slightly jiggly.
- Using bottled lime juice: Freshly squeezed lime juice gives the bars their signature taste. Bottled juice lacks the vibrant flavor that key limes provide.
- Skipping the chilling time: These bars need time in the fridge to fully set and develop their flavors. Don’t rush this step for the best taste and texture.
- Not zesting properly: The zest adds essential flavor. Make sure to only use the green part of the skin, avoiding the bitter white pith beneath.

Storage & Reheating Instructions
Refrigerator Storage
- Store your Key Lime Pie Bars in an airtight container.
- They can last up to 5 days in the fridge without losing flavor.
Freezing Key Lime Pie Bars
- Wrap individual squares tightly in plastic wrap or aluminum foil.
- Freeze for up to 2 months; just ensure they’re well-protected from freezer burn.
Reheating Key Lime Pie Bars
- Oven: Preheat your oven to 350°F (175°C). Place bars on a baking sheet for about 10 minutes until warmed through.
- Microwave: Heat one square at a time on medium power for 15-20 seconds until just warm.
- Stovetop: Place bars in a skillet over low heat, covering with a lid. Warm slowly for about 5 minutes.
Frequently Asked Questions
Here are some frequently asked questions about Key Lime Pie Bars, along with their answers.
How do I make Key Lime Pie Bars less sweet?
To balance sweetness, consider reducing the amount of sweetened condensed milk or adding more lime juice for extra tanginess.
Can I use other types of citrus?
Yes! You can experiment with other citrus fruits like lemons or oranges, but keep in mind that they will change the flavor profile.
What’s the best way to garnish Key Lime Pie Bars?
Fresh whipped cream or lime slices make delightful garnishes. A sprinkle of lime zest also enhances presentation and flavor.
How do I know when my Key Lime Pie Bars are done?
The bars should be set around the edges but still slightly jiggly in the center. They will firm up as they cool.
Final Thoughts
These Key Lime Pie Bars offer a perfect blend of tartness and sweetness that makes them irresistible. They are versatile too; feel free to customize with different toppings like berries or coconut flakes. Don’t hesitate to give this recipe a try!

Key Lime Pie Bars
- Total Time: 50 minutes
- Yield: Serves approximately 16 bars 1x
Description
Indulge in the refreshing delight of Key Lime Pie Bars, a perfect summer treat that offers a harmonious balance of tart lime flavor and creamy texture. These bars are incredibly easy to prepare, making them ideal for any occasion—from summer barbecues to birthday celebrations. With their vibrant citrus taste and cool finish, they are sure to impress family and friends alike.
Ingredients
- 2 cups vanilla wafer cookies, finely ground
- 5 tablespoons unsalted butter, melted
- 2 tablespoons light brown sugar
- 1 tablespoon lime zest
- 5 large egg yolks
- 22 ounces sweetened condensed milk
- 1 cup freshly squeezed lime juice
- 1 cup heavy whipping cream
- 2 tablespoons powdered sugar
Instructions
- Preheat your oven to 350°F (175°C). In a food processor, blend the ground vanilla wafer cookies with melted butter and brown sugar until mixed. Press into a greased 9×9 inch baking pan and bake for 10 minutes. Let cool.
- For the filling, whisk together lime zest and egg yolks in a bowl. Gradually add sweetened condensed milk until smooth, then stir in lime juice.
- Pour the filling over the cooled crust and bake for an additional 15-20 minutes or until set but slightly jiggly in the center. Cool at room temperature before refrigerating for at least 4 hours.
- Whip heavy cream with powdered sugar until stiff peaks form. Spread or pipe over chilled bars before slicing.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 bar (approximately 60g)
- Calories: 180
- Sugar: 14g
- Sodium: 70mg
- Fat: 11g
- Saturated Fat: 7g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 19g
- Fiber: <1g
- Protein: 2g
- Cholesterol: 80mg