Key Lime Pie Bars
These Key Lime Pie Bars are the perfect summer treat! With their tart and tangy flavor, they bring a refreshing twist to any gathering. Easy to prepare and delightful served chilled, these bars make an excellent dessert for picnics, parties, or simply enjoying at home. They’re sure to impress your guests with their vibrant taste and creamy texture!

Why You’ll Love This Recipe
- Quick and Easy: These key lime pie bars can be made in just under an hour, making them a stress-free dessert option.
- Bursting with Flavor: The combination of fresh lime juice and zest creates a bright and zesty flavor that is truly irresistible.
- Versatile Serving Options: Perfect for summer BBQs, potlucks, or as a simple weeknight treat; these bars fit any occasion.
- Chilled Delight: Enjoy them straight from the fridge on a hot day for a refreshing dessert that cools you down.
- Kid-Friendly: With its sweet and tangy profile, even kids will love these delicious bars!
Tools and Preparation
Having the right tools makes preparing your Key Lime Pie Bars a breeze! Below is a list of essential tools you’ll need.
Essential Tools and Equipment
- 9×13-inch baking dish
- Mixing bowls
- Whisk
- Electric mixer or hand mixer
- Rubber spatula
- Measuring cups and spoons
Importance of Each Tool
- 9×13-inch baking dish: This size is perfect for evenly baking your key lime pie bars while providing enough room for cutting into squares.
- Electric mixer or hand mixer: Using this tool ensures that your filling is smooth and creamy without lumps.
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 Baking Dish
- Start by preheating your oven to 350°F (175°C). Grease your 9×13-inch baking dish lightly.
Step 2: Make the Crust
- In a mixing bowl, combine finely ground vanilla wafer cookies with melted butter and brown sugar.
- Mix until well combined.
- Press this mixture firmly into the bottom of the prepared baking dish to form an even crust.
Step 3: Bake the Crust
- Place the crust in the preheated oven and bake for about 10 minutes until golden brown. Remove from oven and let it cool.
Step 4: Prepare the Filling
- In another bowl, whisk together egg yolks until slightly thickened.
- Gradually add sweetened condensed milk while continuing to whisk.
- Mix in freshly squeezed lime juice and lime zest until fully incorporated.
Step 5: Bake the Filling
- Pour the filling over the cooled crust in the baking dish. Bake for approximately 15-20 minutes until set but still slightly wobbly in the center.
Step 6: Cool & Chill
- Allow the baked bars to cool at room temperature before refrigerating them for at least two hours.
Step 7: Whip Cream Topping
- In a mixing bowl, whip heavy cream with powdered sugar until soft peaks form.
- Spread whipped cream evenly over chilled key lime filling.
Step 8: Serve
- Cut into squares and enjoy your delicious Key Lime Pie Bars! Perfectly refreshing for any occasion!
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 simply indulging at home, here are some creative serving suggestions.
Pair with Fresh Berries
- Strawberries: Their sweetness complements the tartness of key lime pie bars beautifully.
- Blueberries: These add a pop of color and a subtle flavor contrast.
Top with Whipped Cream
- Homemade whipped cream: Freshly whipped cream adds richness and balances the tartness.
- Flavored versions: Consider adding a hint of vanilla or coconut for a unique twist.
Serve with Ice Cream
- Vanilla ice cream: A classic choice that enhances the creamy texture of the bars.
- Lime sherbet: This adds an extra citrus kick that pairs perfectly with the key lime flavors.
Garnish with Lime Slices
- Thin lime rounds: Placing these on top provides an appealing visual.
- Lime wedges: They can be served on the side for an additional zesty touch.
Enjoy with Iced Tea or Lemonade
- Sweetened iced tea: A refreshing drink that complements the tangy flavors of the dessert.
- Homemade lemonade: The citrus notes will enhance your key lime experience.

How to Perfect Key Lime Pie Bars
Achieving perfect key lime pie bars is all about attention to detail. Here are some tips to ensure your dessert turns out amazing every time.
- Choose fresh limes: Using freshly squeezed lime juice from key limes enhances the flavor significantly compared to bottled juice.
- Crush cookies finely: Ensure your vanilla wafer cookies are ground into fine crumbs for a smooth crust.
- Bake until set: The filling should be just set in the center; overbaking can cause cracks in your bars.
- Chill thoroughly: Allow your bars to cool completely before refrigerating. This helps them firm up nicely and makes cutting easier.
- Slice with a warm knife: Dip your knife in hot water before slicing for clean, neat edges.
Best Side Dishes for Key Lime Pie Bars
When serving key lime pie bars, consider pairing them with complementary side dishes. Here are some excellent options that enhance this delightful dessert.
- Coconut Macaroons: These chewy treats bring a tropical flair and work well alongside the tartness of key lime pie bars.
- Fruit Salad: A refreshing mix of seasonal fruits can balance the rich flavors of the dessert while adding freshness.
- Grilled Pineapple: Caramelized sweetness from grilled pineapple pairs beautifully with key lime’s tartness and adds a smoky element.
- Chocolate Dipped Strawberries: The combination of chocolate and fruit creates an indulgent pairing that’s hard to resist.
- Cheese Platter: Include soft cheeses like brie or goat cheese; they provide a creamy contrast to the tangy bars.
- Nutty Granola: A crunchy granola topped with yogurt can serve as a delightful side, adding texture and flavor variety.
Common Mistakes to Avoid
Making key lime pie bars can be simple, but avoiding common mistakes is essential for the best results.
- Incorrect crust consistency: A crumbly or overly wet crust can ruin your bars. Make sure to finely grind the vanilla wafers and mix them well with melted butter and brown sugar.
- Skipping the zest: Lime zest adds a vibrant flavor. Always include fresh lime zest for that extra punch in your key lime pie bars.
- Overbaking: Baking too long can lead to a tough texture. Keep a close eye on your bars during the last few minutes of baking.
- Using bottled juice: Freshly squeezed lime juice is crucial for authentic taste. Opt for real limes over bottled options to enhance flavor.
- Not chilling properly: Serving warm can affect taste and texture. Allow your key lime pie bars to chill completely before serving for the best experience.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container in the fridge.
- Enjoy within 5 days for optimal freshness.
Freezing Key Lime Pie Bars
- Wrap individual servings tightly in plastic wrap or foil.
- Freeze for up to 3 months, ensuring they are well-protected from freezer burn.
Reheating Key Lime Pie Bars
- Oven: Preheat to 350°F (175°C) and heat bars for about 10 minutes until just warm.
- Microwave: Heat on low power for 20-30 seconds, checking every 10 seconds to avoid overheating.
- Stovetop: Place bars in a skillet over low heat, warming gently while monitoring closely.
Frequently Asked Questions
Here are some common questions about making key lime pie bars that might help you.
How do I make my Key Lime Pie Bars extra creamy?
To achieve creaminess, ensure you use full-fat sweetened condensed milk and whip the cream until soft peaks form before folding it into the mixture.
Can I substitute other citrus juices in Key Lime Pie Bars?
Yes! You can experiment with lemon or grapefruit juice, but keep in mind the flavor profile will change slightly.
What’s the best way to serve Key Lime Pie Bars?
Serve them chilled straight from the refrigerator. Garnish with whipped cream and lime slices for a beautiful presentation!
How do I know when my Key Lime Pie Bars are done baking?
The edges should be set, while the center may still jiggle slightly. It will firm up as it cools.
Final Thoughts
These key lime pie bars offer a delightful blend of tartness and sweetness that’s perfect for any occasion. Their versatility allows you to customize toppings or even experiment with different citrus fruits. Try them out this summer; they are sure to impress!

Key Lime Pie Bars
- Total Time: 50 minutes
- Yield: Makes approximately 12 servings 1x
Description
Get ready to indulge in a refreshing summer treat with these delightful Key Lime Pie Bars! Bursting with zesty lime flavors and a creamy texture, these bars are the perfect dessert for any occasion, from backyard barbecues to family gatherings. With a simple and quick preparation process, you can whip up this tangy delight in no time at all. These bars are served chilled, making them an ideal choice for hot days when you crave something light yet satisfying. Your guests will be impressed by their vibrant taste and beautiful presentation topped with whipped cream.
Ingredients
- 2 cups vanilla wafer cookies
- 5 tablespoons unsalted butter
- 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) and grease a 9×13-inch baking dish.
- For the crust, combine finely ground vanilla wafers, melted butter, and brown sugar in a bowl; mix well and press into the bottom of the baking dish.
- Bake the crust for about 10 minutes until golden brown; allow it to cool.
- In another bowl, whisk egg yolks until slightly thickened; gradually add sweetened condensed milk while whisking continuously.
- Stir in lime juice and zest until fully incorporated; pour over the cooled crust.
- Bake for 15-20 minutes until set but still slightly wobbly in the center; cool completely before refrigerating for at least two hours.
- Whip heavy cream with powdered sugar until soft peaks form; spread over chilled bars before serving.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 bar (60g)
- Calories: 270
- Sugar: 22g
- Sodium: 90mg
- Fat: 16g
- Saturated Fat: 10g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 0g
- Protein: 3g
- Cholesterol: 120mg