Key Lime Pie Bars Recipe: Tangy, Creamy, and Easy to Make
Introduction
Key Lime Pie Bars are a dessert that captures the essence of summer and the brightness of fresh citrus in every bite. Their tangy, creamy filling combined with a buttery, golden crust makes them irresistible to anyone who loves citrus desserts. Unlike traditional pies, these bars offer convenience and portability while maintaining the rich flavor of a classic Key Lime Pie. They are ideal for holiday gatherings, summer parties, or even a simple family dessert that brings a smile to the table.

The beauty of Key Lime Pie Bars lies in their simplicity and elegance. A few high-quality ingredients come together to create a dessert that is both refreshing and indulgent. Sweetened condensed milk adds a creamy texture and gentle sweetness, while key lime juice provides the signature tartness that balances the richness. The buttery crust acts as a foundation, holding the filling perfectly while giving each bite a satisfying crunch.
Making Key Lime Pie Bars does not require advanced baking skills. With the right steps and a little patience, anyone can create bars that look stunning and taste even better. The bars are versatile and can be dressed up with toppings like whipped cream, fresh lime zest, or even thin slices of lime for a visually appealing finish. Their combination of texture, flavor, and color makes them a standout dessert for any occasion.
Ingredients Needed
Below is a table listing the ingredients for Key Lime Pie Bars along with their approximate calorie count per serving.
| Ingredient | Quantity | Calories (per serving) |
|---|---|---|
| Graham cracker crumbs | 1 1/2 cups | 120 |
| Granulated sugar | 1/4 cup | 48 |
| Unsalted butter, melted | 1/2 cup | 200 |
| Large eggs | 4 | 280 |
| Sweetened condensed milk | 1 can (14 oz) | 420 |
| Key lime juice | 1/2 cup | 30 |
| Lime zest | 1 tablespoon | 2 |
| Vanilla extract | 1 teaspoon | 12 |
| Whipped cream (optional) | As needed | 50 |
Each ingredient plays an essential role in achieving the perfect balance of flavor and texture. The crust provides structure, the filling gives creaminess and tang, and optional toppings elevate the dessert with an added layer of sweetness and presentation appeal.
Step-by-Step Cooking Instructions
- Preheat your oven to 350 degrees Fahrenheit. Line a 9 by 9-inch baking pan with parchment paper, allowing some overhang for easy removal of the bars.
- In a medium bowl, mix graham cracker crumbs, sugar, and melted butter until the mixture resembles wet sand. Press the mixture firmly into the bottom of the prepared pan to form an even layer. Bake the crust for 8 to 10 minutes or until lightly golden. Allow it to cool slightly before adding the filling.
- In a separate large bowl, whisk together the eggs until smooth. Gradually add the sweetened condensed milk, stirring until well combined. Incorporate key lime juice, lime zest, and vanilla extract, blending until the mixture is creamy and uniform.
- Pour the filling over the pre-baked crust and spread it evenly with a spatula. The filling should cover the crust completely, creating a smooth top layer.
- Bake the bars for 15 to 20 minutes or until the edges are set but the center still has a slight jiggle. Overbaking may result in cracks or a dry texture, so careful attention is important.
- Remove the pan from the oven and let it cool to room temperature. Once cooled, transfer it to the refrigerator and chill for at least 2 hours to allow the filling to fully set.
- After chilling, use the parchment paper overhang to lift the bars from the pan. Cut into squares or rectangles of your desired size. Top each bar with whipped cream, lime zest, or a thin slice of lime if desired. Serve and enjoy the bright, tangy flavor that defines Key Lime Pie Bars.

Tips for Customizing the Recipe
Key Lime Pie Bars are versatile and can be adapted to suit individual tastes or dietary preferences. For a gluten-free version, substitute graham cracker crumbs with gluten-free crackers or almond flour mixed with a touch of sugar. Adjust the sweetness of the filling by reducing the amount of sweetened condensed milk or using a sugar-free alternative.
For an extra creamy texture, add a tablespoon of cream cheese to the filling, blending it until smooth. If a more intense lime flavor is preferred, include additional lime zest or slightly increase the amount of key lime juice. Presentation can also be enhanced by adding fresh berries, a drizzle of white chocolate, or even a dusting of powdered sugar.
Experimenting with crusts is another way to customize the bars. Some variations use crushed shortbread cookies or digestive biscuits for a different flavor and texture. Toasting the crust lightly before adding the filling can also bring out a richer, nutty aroma.
Nutritional Information
Key Lime Pie Bars offer a delightful balance of richness and freshness. Each serving provides energy, calcium, and small amounts of essential vitamins and minerals.
Approximate nutrition per serving:
- Calories: 220
- Protein: 4 grams
- Fat: 12 grams
- Carbohydrates: 27 grams
- Fiber: 0.5 grams
- Sugar: 18 grams
- Vitamin C: 10 percent of daily value
- Calcium: 8 percent of daily value

The dessert is indulgent yet contains ingredients that provide some nutritional benefits. Key lime juice adds vitamin C, while eggs and milk contribute protein and calcium. Moderation is key, and pairing the bars with fresh fruit or a light beverage can balance the dessert experience.
Serving Suggestions
Key Lime Pie Bars are versatile and pair well with a variety of accompaniments. Serve them chilled with a dollop of whipped cream for an elegant presentation. Garnish with thin lime slices or zest for a vibrant, fresh look.
They are ideal for summer gatherings, afternoon teas, or holiday desserts. Pairing them with a lightly brewed coffee, herbal tea, or a sparkling beverage enhances the citrus flavor. For casual gatherings, serve the bars on a decorative tray, allowing guests to take individual portions easily. They also work beautifully as a dessert for potlucks or picnics due to their portability and convenient portion size.
Key Lime Pie Bars Recipe: Tangy, Creamy, and Easy to Make
12
servings20
minutes25
minutes220
kcalIngredients
For the crust:
1 1/2 cups graham cracker crumbs
1/4 cup granulated sugar
1/2 cup unsalted butter, melted
For the filling:
4 large eggs
1 can (14 oz) sweetened condensed milk
1/2 cup key lime juice (fresh or bottled)
1 tablespoon lime zest
1 teaspoon vanilla extract
For topping (optional):
Whipped cream
Lime slices or zest for garnish
Directions
- Preheat the oven to 350°F (175°C). Line a 9×9-inch baking pan with parchment paper.
- In a medium bowl, combine graham cracker crumbs, sugar, and melted butter. Press firmly into the bottom of the prepared pan to form an even crust. Bake for 8–10 minutes, until lightly golden. Remove from oven and let cool slightly.
- In a separate bowl, whisk together eggs, sweetened condensed milk, key lime juice, lime zest, and vanilla extract until smooth and creamy.
- Pour the filling over the baked crust and spread evenly.
- Bake for 15–20 minutes, or until the filling is set but still slightly jiggly in the center. Avoid overbaking to maintain a creamy texture.
- Remove from oven and let cool to room temperature. Then refrigerate for at least 2 hours to set completely.
- Once chilled, cut into bars and top with whipped cream and lime zest if desired. Serve and enjoy the tangy, creamy goodness.
Recipe Video
Notes
- Fresh key lime juice gives the best authentic flavor, but bottled juice works in a pinch.
Bars can be stored in the refrigerator for up to 4 days in an airtight container.
Frequently Asked Questions
Can I use regular lime juice instead of key lime juice?
Yes, regular lime juice can be used, but key lime juice provides a more authentic, slightly floral flavor that distinguishes the bars.
How long can I store Key Lime Pie Bars?
Store the bars in an airtight container in the refrigerator for up to four days. They can also be frozen for up to two months; thaw in the refrigerator before serving.
Can I make them ahead of time?
Absolutely. Prepare the bars the day before serving to allow ample chilling time. The flavors intensify after refrigeration, making them even more delicious.
Is it possible to make a sugar-free version?
Yes, substitute sweetened condensed milk with a sugar-free condensed milk alternative and adjust sugar in the crust or toppings accordingly.
Can I use a different type of crust?
Graham cracker crust is traditional, but shortbread, digestive biscuits, or almond flour crusts all work well and provide unique flavors and textures.
Conclusion
Key Lime Pie Bars are more than just a dessert; they are a celebration of bright citrus flavors, creamy texture, and buttery richness. Each bite brings together the perfect balance of tanginess and sweetness, creating a refreshing treat that appeals to both adults and children.
Making these bars is rewarding, as the process is straightforward yet allows room for creativity in toppings, crusts, and presentation. They embody both elegance and simplicity, making them a versatile choice for summer parties, holiday gatherings, or casual family dinners.
By taking care with ingredients, baking times, and chilling, anyone can achieve bars that are creamy, flavorful, and visually appealing. Sharing Key Lime Pie Bars is not only about offering dessert but also about creating moments of enjoyment and indulgence that leave lasting impressions on those who taste them.
