Key Lime Bars

Key Lime Bars are a classic dessert renowned for their bright citrus flavor, creamy texture, and a buttery, crisp crust. These bars draw inspiration from the famous Key lime pie, a dessert originating from the Florida Keys in the late 19th century.

The traditional Key lime pie has captivated dessert lovers for generations with its perfect balance of sweet and tart flavors. Key limes, smaller and more aromatic than standard Persian limes, are the star ingredient, imparting their signature tang and floral notes.

Key Lime Bars take the same iconic flavors and transform them into easy-to-enjoy bars, making them an appealing choice for parties, gatherings, picnics, and bake sales. With a zesty, smooth filling and a crunchy graham cracker crust, these bars are irresistible to citrus enthusiasts and dessert lovers.

Not only are they quick to prepare, but they're also simple to portion and serve, making Key Lime Bars a staple in many kitchens.

Whether you're familiar with Key lime desserts or trying them for the first time, these bars are sure to brighten your dessert table and leave a lasting impression.

Ingredients

• 1 and ½ cups graham cracker crumbs (about 12 full sheets)
• ⅓ cup granulated sugar
• ¼ teaspoon salt
• 6 tablespoons unsalted butter, melted
• 2 teaspoons grated lime zest (preferably from Key limes)
• 4 large egg yolks
• 1 can (14 ounces) sweetened condensed milk
• ½ cup fresh Key lime juice (from about 1 pound Key limes or substitute regular limes)
• ¼ cup sour cream
• Powdered sugar, for dusting (optional)
• Lime slices or zest, for garnish (optional)

Instructions

1. Preheat your oven to 350°F (175°C). Line an 8x8-inch (20x20cm) baking pan with parchment paper, leaving an overhang on the sides for easy removal.
2. In a medium bowl, combine graham cracker crumbs, granulated sugar, salt, and melted butter. Mix until the crumbs are evenly moistened.
3. Press the crumb mixture firmly into the bottom of the prepared pan, creating an even layer. Use the bottom of a measuring cup to help compress it.
4. Bake the crust for 8-10 minutes, or until lightly golden and set. Remove from oven and let it cool slightly while you prepare the filling.
5. In a large bowl, whisk together the egg yolks and lime zest until the mixture is pale and thick, about 2 minutes.
6. Add the sweetened condensed milk and sour cream to the egg mixture, whisking until smooth and well combined.
7. Slowly whisk in the fresh Key lime juice until fully incorporated and the filling thickens slightly. Pour the filling over the slightly cooled crust and smooth the top with a spatula.
8. Bake the bars for 15-18 minutes, or until the filling is just set and the edges are very lightly golden. Remove from oven and cool to room temperature.
9. Once cooled, refrigerate the bars for at least 3 hours or until thoroughly chilled and firm.
10. Lift the bars out of the pan using the parchment paper overhang. Cut into squares or rectangles, dust with powdered sugar, and garnish with lime slices or zest if desired. Serve chilled.

Nutritional Information

Key Lime Bars offer a unique combination of nutrients from both their creamy filling and buttery crust. A typical Key Lime Bar square (assuming 16 servings per batch) provides approximately 180-220 calories, with about 9-11 grams of fat, 24 grams of carbohydrates, and 3-4 grams of protein per serving.

The primary source of fat comes from the butter in the crust and the egg yolks in the filling, which contribute to the dessert's rich texture and flavor.

Sweetened condensed milk brings a boost of calcium and small amounts of vitamin D, while the egg yolks supply vitamin A and some cholesterol. Key limes offer vitamin C and antioxidants, though mainly in small amounts per bar.

Due to their sugar content, Key Lime Bars should be enjoyed in moderation, especially for those monitoring their sugar intake. These bars are not gluten-free (due to the graham crackers) or dairy-free but can be adapted to fit certain dietary needs with alternative ingredients.

The creamy, tart filling provides a satiety that makes small serving sizes quite satisfying. As a dessert, Key Lime Bars are an indulgent treat, perfect for occasional enjoyment within a balanced diet.

Wine and Beverage Pairings

To complement the bright citrus flavors of Key Lime Bars, consider pairing them with a crisp, slightly sweet beverage. Perfect options include a glass of Moscato d'Asti, a late-harvest Riesling, or a sparkling Prosecco.

For non-alcoholic choices, a homemade limeade, iced green tea with a splash of honey, or coconut water on ice will highlight the tangy notes of the bars. If you prefer something richer, a cup of freshly brewed coffee or a lightly roasted herbal tea balances the zest and sweetness.

Serve ice-cold beverages alongside these bars to refresh the palate and enhance the dessert experience.

Cooking Tips and Variations

For the very best Key Lime Bars, always use fresh-squeezed Key lime juice. While bottled juice or Persian limes can substitute in a pinch, authentic Key limes impart a distinctive floral-tart flavor that sets these bars apart.

When zesting limes, be careful to use just the green outer layer, avoiding the bitter white pith. If Key limes are unavailable, a mix of freshly squeezed lemon and regular lime juice can mimic the flavor profile.

To achieve a smoother filling, whisk the egg yolks and lime zest until thickened before adding other ingredients. For added crunch and flavor, try adding a few tablespoons of finely chopped toasted coconut to your crust.

If you prefer a thicker crust, increase the graham cracker base by ½ cup and adjust the butter accordingly. You can make these bars gluten-free by using gluten-free graham cracker crumbs. For a dairy-free version, substitute dairy-free sweetened condensed milk and a plant-based butter alternative.

The bars cut most cleanly when fully chilled-use a sharp knife and wipe it between cuts for perfect squares. Experiment with garnishes, such as whipped cream, candied lime peel, or a sprinkle of sea salt to finish your Key Lime Bars with style.

Serving Suggestions

Key Lime Bars are versatile when it comes to serving presentations. Once thoroughly chilled and set, use the parchment paper overhang to lift the bars from the pan and transfer them to a cutting board.

For the neatest slices, use a long, sharp knife dipped in hot water and wiped dry between each cut. This minimizes crumbling and maintains clean edges. Arrange the bars on a platter lined with lime slices, or use cupcake liners for individual servings at parties or bake sales.

For formal occasions, elevate each bar with a dollop of whipped cream, a sprinkle of lime zest, or an edible flower for a burst of color.

Key Lime Bars are best served cold, making them a refreshing treat for summer gatherings, but they're equally delightful as a citrusy dessert in cooler months. If prepping ahead, the bars can be made up to two days in advance and stored, covered, in the refrigerator.

For outdoor events, transport them in a chilled container to preserve their texture. Share these bars as a cheerful finish to picnics, family dinners, holiday parties, or casual coffee breaks. Their vibrant presentation and tangy taste are guaranteed to delight guests and make any occasion feel extra special.

Health Benefits

While Key Lime Bars are a delicious indulgence, they do offer some healthful benefits owing to their use of citrus and eggs. Key limes are a good source of vitamin C, which supports immune health and collagen production in the skin.

The recipe uses egg yolks, providing nutrients like vitamin A, choline, and protein that are crucial for cell growth and brain function. The graham cracker crust, though mainly a source of carbohydrates, can be enriched by using whole wheat or fiber-rich cracker varieties for a slight nutritional boost.

It's important to remember that Key Lime Bars are a dessert and contain sugar and butter, so moderation is recommended especially for those watching their sugar or fat intake.

By using fresh, natural ingredients and avoiding processed substitutes, you can indulge in Key Lime Bars as part of a balanced diet.

To further enhance their nutritional profile, consider adding a handful of finely chopped nuts to the crust for healthy fats and extra protein, or serve with a side of fresh berries for added vitamins and fiber.

Frequently Asked Questions

Key Lime Bars bring a burst of tropical citrus to your dessert table, combining the creamy, tart flavors of a classic Key lime pie with the easy-to-serve convenience of dessert bars. Perfect for summer gatherings, holiday treats, or any time you crave something tangy and refreshing, these bars never fail to impress. With their golden, buttery crust and vibrant filling, Key Lime Bars are both visually stunning and irresistibly tasty. Whether you're a longtime fan or discovering them for the first time, enjoy these bars as a delightful homage to a beloved American dessert tradition.

★★★★★ 4.90 from 13 ratings

Key Lime Bars

yield: 12 servings

prep: 25 mins

cook: 28 mins

total: 50 mins

These luscious Key Lime Bars feature a buttery graham cracker crust and a tangy, creamy Key lime filling. Perfectly balanced with sweetness and citrus brightness, they're a refreshing and easy-to-make dessert for any occasion.

🖨️ Print Pin Recipe

Ingredients

• 1 and ½ cups graham cracker crumbs (about 12 full sheets)
• ⅓ cup granulated sugar
• ¼ teaspoon salt
• 6 tablespoons unsalted butter, melted
• 2 teaspoons grated lime zest (preferably from Key limes)
• 4 large egg yolks
• 1 can (14 ounces) sweetened condensed milk
• ½ cup fresh Key lime juice (from about 1 pound Key limes or substitute regular limes)
• ¼ cup sour cream
• Powdered sugar, for dusting (optional)
• Lime slices or zest, for garnish (optional)

Instructions

1. 1
   Preheat your oven to 350°F (175°C). Line an 8x8-inch (20x20cm) baking pan with parchment paper, leaving an overhang on the sides for easy removal.
2. 2
   In a medium bowl, combine graham cracker crumbs, granulated sugar, salt, and melted butter. Mix until the crumbs are evenly moistened.
3. 3
   Press the crumb mixture firmly into the bottom of the prepared pan, creating an even layer. Use the bottom of a measuring cup to help compress it.
4. 4
   Bake the crust for 8-10 minutes, or until lightly golden and set. Remove from oven and let it cool slightly while you prepare the filling.
5. 5
   In a large bowl, whisk together the egg yolks and lime zest until the mixture is pale and thick, about 2 minutes.
6. 6
   Add the sweetened condensed milk and sour cream to the egg mixture, whisking until smooth and well combined.
7. 7
   Slowly whisk in the fresh Key lime juice until fully incorporated and the filling thickens slightly. Pour the filling over the slightly cooled crust and smooth the top with a spatula.
8. 8
   Bake the bars for 15-18 minutes, or until the filling is just set and the edges are very lightly golden. Remove from oven and cool to room temperature.
9. 9
   Once cooled, refrigerate the bars for at least 3 hours or until thoroughly chilled and firm.
10. 10
    Lift the bars out of the pan using the parchment paper overhang. Cut into squares or rectangles, dust with powdered sugar, and garnish with lime slices or zest if desired. Serve chilled.

CLICK FOR NUTRITION INFO ↑

Approximate Information for One Serving

Serving Size: 1 serving

Calories: 230 caloriescal

Protein: 4gg

Fat: 10gg

Saturated Fat: 0g

Trans Fat: 0g

Cholesterol: 0mg

Sodium: 0mg

Potassium: 0mg

Total Carbs: 33gg

Fiber: 0g

Sugar: 0g

Net Carbs: 0g

Vitamin A: 0

Vitamin C: 0mg

Calcium: 0mg

Iron: 0mg

Nutrition Disclaimers

Number of total servings shown is approximate. Actual number of servings will depend on your preferred portion sizes.

Nutritional values shown are general guidelines and reflect information for 1 serving using the ingredients listed, not including any optional ingredients. Actual macros may vary slightly depending on specific brands and types of ingredients used.

To determine the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe (not including the weight of the container the food is in) by the desired number of servings. Result will be the weight of one serving.

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