Key lime pie bars are a delightful dessert that combines a buttery graham cracker crust with a creamy, tart lime filling. Perfect for summer gatherings, picnics, or any occasion that calls for a refreshing treat, these bars are sure to impress your guests. Their combination of sweet and tangy flavors makes them a standout dessert that is both easy to make and fun to share.

Jump to:
- Why You’ll Love This Recipe
- Tools and Preparation
- Essential Tools and Equipment
- Importance of Each Tool
- Ingredients
- How to Make Key Lime Pie Bars
- Step 1: Preheat the Oven
- Step 2: Prepare the Crust
- Step 3: Mix the Crust Ingredients
- Step 4: Make the Filling
- Step 5: Add Remaining Ingredients
- Step 6: Combine Filling with Crust
- Step 7: Chill & Serve
- How to Serve Key Lime Pie Bars
- Classic Presentation
- Tropical Twist
- Fun Serving Ideas
- Seasonal Variations
- How to Perfect Key Lime Pie Bars
- Best Side Dishes for Key Lime Pie Bars
- Common Mistakes to Avoid
- Storage & Reheating Instructions
- Refrigerator Storage
- Freezing Key Lime Pie Bars
- Reheating Key Lime Pie Bars
- Frequently Asked Questions
- What are Key Lime Pie Bars?
- Can I use regular limes instead of key limes?
- How do I know when my Key Lime Pie Bars are done baking?
- Can I make Key Lime Pie Bars ahead of time?
- What toppings go well with Key Lime Pie Bars?
- Final Thoughts
- 📖 Recipe Card
Why You’ll Love This Recipe
- Easy to Make: With simple ingredients and straightforward steps, you’ll whip up these bars in no time.
- Perfect for Any Occasion: Whether it’s a family gathering, birthday party, or just a sweet treat after dinner, these bars fit right in.
- Great Flavor Balance: The tartness of key limes perfectly complements the sweetness of the crust and filling.
- Make Ahead Option: These bars can be prepared in advance and stored in the fridge, making them ideal for busy days.
- Versatile Serving Options: Serve them chilled or at room temperature; they are delicious either way!
Tools and Preparation
Having the right tools makes all the difference when preparing key lime pie bars. Here’s what you’ll need to get started.
Essential Tools and Equipment
- Food processor or rolling pin
- Mixing bowls
- Hand mixer or stand mixer
- 9×9-inch baking pan
- Aluminum foil or parchment paper
Importance of Each Tool
- Food processor: Quickly crushes graham crackers into fine crumbs, saving you time and effort.
- Mixing bowls: Essential for combining ingredients thoroughly, ensuring even distribution of flavors.
- Hand mixer/Stand mixer: Makes beating cream cheese and mixing the filling smooth and easy.
Ingredients
Key lime pie bars are a favorite dessert in a bar – a buttery graham cracker crust and a tart and creamy lime filling!!
Ingredients:
– 15 sheets graham crackers, (or 30 squares)
– 2 tablespoons sugar
– pinch salt
– 6 tablespoons unsalted butter, (melted)
– 6 ounces cream cheese, (room temperature)
– 1 (14-ounce) can sweetened condensed milk
– 4 egg yolks
– 1 tablespoon lime zest
– ½ cup key lime juice, (or regular lime juice)
– ½ teaspoon vanilla extract
How to Make Key Lime Pie Bars
Step 1: Preheat the Oven
Preheat your oven to 350°F. Line a 9×9-inch pan with aluminum foil or parchment paper for easy removal later.
Step 2: Prepare the Crust
In a food processor or using a rolling pin inside a large Ziploc bag, crush the graham crackers until fine crumbs form.
Step 3: Mix the Crust Ingredients
In a medium mixing bowl:
1. Combine the crushed graham crackers with sugar and salt.
2. Pour in the melted butter and mix to combine.
3. Press this mixture evenly into the bottom of your lined pan.
4. Bake in the preheated oven for about 10 minutes.
Step 4: Make the Filling
While the crust bakes:
1. In a large mixing bowl with a hand mixer or stand mixer, beat cream cheese until smooth.
2. Add sweetened condensed milk gradually while mixing until well combined.
Step 5: Add Remaining Ingredients
- Add egg yolks one at a time, mixing well after each addition.
- Mix in lime zest, key lime juice, and vanilla extract until everything is combined.
Step 6: Combine Filling with Crust
Pour the creamy filling over the hot crust once it’s finished baking. Return to the oven and bake for another 15–18 minutes, until set but not browned.
Step 7: Chill & Serve
Remove from oven and let cool before chilling in the refrigerator for at least 2-4 hours. Cut into bars before serving. Store any leftovers in an airtight container in the refrigerator for up to five days.
How to Serve Key Lime Pie Bars
Key lime pie bars are perfect for any gathering or celebration. Their refreshing tartness and creamy texture make them an excellent dessert choice. Here are some creative ways to serve them.
Classic Presentation
- Serve chilled: Always serve your key lime pie bars cold for the best flavor.
- Garnish with whipped cream: A dollop of homemade whipped cream adds richness.
Tropical Twist
- Top with toasted coconut: Sprinkle toasted coconut flakes for a tropical flair.
- Add fresh berries: Blueberries or strawberries can enhance the flavor and presentation.
Fun Serving Ideas
- Use mini dessert cups: Cut the bars into bite-sized pieces and serve in small cups for easy handling.
- DIY dessert bar: Set up a dessert station where guests can add toppings like nuts or chocolate shavings.
Seasonal Variations
- Incorporate seasonal fruits: Try adding slices of mango or kiwi on top during summer months.
- Drizzle with chocolate: For a unique twist, drizzle melted dark chocolate over the bars before serving.

How to Perfect Key Lime Pie Bars
To achieve the ultimate key lime pie bars, follow these essential tips. These will ensure your dessert turns out perfectly every time.
- Use fresh ingredients: Opt for fresh key limes if available. They provide a vibrant flavor compared to bottled juice.
- Beat cream cheese well: Ensure your cream cheese is smooth before adding other ingredients, preventing lumps in the filling.
- Do not overbake: Keep an eye on your bars while baking; they should be set but not browned on top.
- Chill adequately: Letting the bars chill for at least 2 hours helps them firm up for easier cutting and serving.
Best Side Dishes for Key Lime Pie Bars
Pairing side dishes with key lime pie bars can elevate your dessert experience. Here are some delightful options to consider.
- Fruit Salad: A light and refreshing combination of seasonal fruits complements the tartness of the bars.
- Vanilla Ice Cream: Creamy vanilla ice cream can balance out the tangy flavors of the key lime pie.
- Coconut Sorbet: For a tropical touch, serve with coconut sorbet that mirrors the bar’s flavors.
- Chilled Lemonade: A glass of chilled lemonade provides a zesty drink option that pairs beautifully with dessert.
- Chocolate Dipped Strawberries: The sweetness of chocolate-covered strawberries creates a delicious contrast to the tartness of the bars.
- Mint Tea: A refreshing herbal mint tea can cleanse the palate and enhance the overall dining experience.
Common Mistakes to Avoid
Making key lime pie bars can be straightforward, but there are common pitfalls to watch out for.
- Using stale graham crackers: Freshness matters! Ensure your graham crackers are fresh for the best crust texture and flavor.
- Not measuring ingredients accurately: Precision is key in baking. Use measuring cups and spoons to ensure you add the right amounts for the perfect bars.
- Overbaking the filling: Keep an eye on the filling as it bakes. Remove it from the oven when it’s just set to maintain a creamy texture.
- Skipping the chilling time: Patience is essential. Chilling your bars helps them firm up and enhances their flavor, making them more enjoyable.
- Not greasing the pan: Make sure to grease or line your pan properly. This step prevents sticking and helps you cut clean bars.

Storage & Reheating Instructions
Refrigerator Storage
- Store your key lime pie bars in an airtight container.
- They can last in the fridge for up to 5 days.
Freezing Key Lime Pie Bars
- Wrap individual bars tightly in plastic wrap or aluminum foil.
- Place them in a freezer-safe container for up to 3 months.
Reheating Key Lime Pie Bars
- Oven: Preheat to 350°F, cover with foil, and warm for about 10 minutes.
- Microwave: Heat on low power in short intervals until slightly warmed—about 15-20 seconds at a time.
- Stovetop: Use a non-stick skillet over low heat, covered, for about 5 minutes until warmed through.
Frequently Asked Questions
Here are some common questions about key lime pie bars that many fans ask.
What are Key Lime Pie Bars?
Key lime pie bars are a delicious dessert made with a buttery graham cracker crust topped with a creamy and tangy lime filling.
Can I use regular limes instead of key limes?
Yes, while traditional recipes use key limes, regular limes work well too. The flavor will be slightly different but still tasty!
How do I know when my Key Lime Pie Bars are done baking?
Your bars are done when the filling is set but still slightly jiggly in the center. They will firm up as they cool.
Can I make Key Lime Pie Bars ahead of time?
Absolutely! These bars taste even better after chilling overnight, making them perfect for meal prep or gatherings.
What toppings go well with Key Lime Pie Bars?
Whipped cream or fresh fruit like berries complements these bars beautifully and adds a touch of color.
Final Thoughts
Key lime pie bars are an irresistible treat that combines creamy tartness with a crunchy crust. Their easy preparation makes them perfect for any occasion. Feel free to customize them by adding toppings or adjusting the sweetness to fit your taste preferences!
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Key Lime Pie Bars
- Total Time: 43 minutes
- Yield: Approximately 16 servings 1x
Description
Key lime pie bars are the perfect summer dessert, combining a buttery graham cracker crust with a zesty, creamy key lime filling. These delightful bars are not only easy to make but also perfect for any occasion, from summer picnics to festive gatherings. With their refreshing sweet-tart flavor, they’re sure to impress your guests and become a favorite in your dessert repertoire. Enjoy serving these chilled treats garnished with whipped cream or fresh berries for an extra touch of elegance.
Ingredients
- 15 sheets graham crackers
- 2 tablespoons sugar
- 6 tablespoons unsalted butter (melted)
- 6 ounces cream cheese (room temperature)
- 1 can (14 ounces) sweetened condensed milk
- 4 egg yolks
- 1 tablespoon lime zest
- ½ cup key lime juice
- ½ teaspoon vanilla extract
Instructions
- Preheat your oven to 350°F and line a 9×9-inch pan with aluminum foil or parchment paper.
- Crush the graham crackers into fine crumbs. Combine them with sugar and melted butter in a mixing bowl.
- Press the crumb mixture evenly into the bottom of the lined pan and bake for about 10 minutes.
- In a separate bowl, beat cream cheese until smooth, then gradually add sweetened condensed milk.
- Mix in egg yolks one at a time, followed by lime zest, juice, and vanilla extract until well combined.
- Pour the filling over the hot crust, then return it to the oven for an additional 15–18 minutes until set.
- Allow to cool before refrigerating for at least 2 hours. Cut into bars and serve chilled.
- Prep Time: 15 minutes
- Cook Time: 28 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 180
- Sugar: 13g
- Sodium: 80mg
- Fat: 8g
- Saturated Fat: 5g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 24g
- Fiber: <1g
- Protein: 2g
- Cholesterol: 40mg