Key Lime Bars Citrus Treat

Posted on February 16, 2026

Delicious key lime bars topped with zest and whipped cream for a refreshing dessert.

Why You’ll Love This Key Lime Bars Citrus Treat :

  • Bright, tangy citrus flavor that’s refreshing and not too sweet.
  • Quick prep and bake time—perfect for last-minute dessert needs.
  • Crowd-pleasing bars that travel well for potlucks and picnics.
  • Easy to make ahead: chill, cut, and serve when guests arrive.
  • Kid-friendly and family-approved—zesty but gentle lime flavor.

introduction

Light, sunny, and impossibly easy, these Key Lime Bars Citrus Treat are a go-to when you want something bright and refreshing. The buttery graham crust plus a silky, tangy filling makes every bite feel like summer. For another bar-style favorite that’s great for lunchboxes and dessert trays, check out this take on Golden Graham Bars for more inspiration.

Ingredients Needed :

Crust

  • 1 ½ cups graham cracker crumbs
  • ½ cup unsalted butter, melted
  • 1/3 cup granulated sugar

Filling

  • 4 large egg yolks
  • 1 can (14 ounces) sweetened condensed milk
  • ½ cup key lime juice
  • zest of 2 key limes

Topping

  • powdered sugar for dusting (optional)

Key Lime Bars Citrus Treat

Step-by-Step Instructions :

  1. Preheat the oven to 350°F (175°C).
  2. In a mixing bowl, combine graham cracker crumbs, melted butter, and granulated sugar. Press the mixture firmly into the bottom of a greased 9×9 inch baking dish to form the crust.
  3. Bake the crust for about 10 minutes or until lightly golden.
  4. In another bowl, whisk together the egg yolks, sweetened condensed milk, key lime juice, and key lime zest until smooth.
  5. Pour the key lime filling over the baked crust and spread evenly.
  6. Bake for an additional 15-20 minutes, or until the filling is set but still slightly jiggly in the center.
  7. Allow to cool at room temperature, then refrigerate for at least 2 hours before cutting into bars.
  8. Dust with powdered sugar before serving, if desired.

Serving Suggestions Key Lime Bars Citrus Treat

  • Serve chilled with a small dollop of whipped cream and extra lime zest for a pretty finish.
  • Pair with fresh berries or a few mint leaves to balance the tartness.
  • For a party platter, cut into small squares and arrange with brownies and cookies for variety.
  • Try alongside a light scoop of vanilla ice cream or a fruity sorbet for contrast — if you want a waffle-and-ice-cream pairing, consider ideas like a waffle ice cream treat for a unique dessert board.

Tips for Success Key Lime Bars Citrus Treat

  • Use fresh key lime juice whenever possible; bottled lime juice will work but fresh zest and juice deliver the brightest flavor.
  • Press the crust firmly and evenly into the pan—this helps the bars hold together when cut.
  • Watch the baking time closely; the filling should be set at the edges but slightly jiggly in the center to avoid overbaking.
  • Chill thoroughly before slicing—cold bars slice cleaner and keep their shape.
  • For a chocolate-citrus pairing idea, serve a small square of your citrus bars with a complementary bite like chocolate-and-raisin treats to please both citrus and chocolate lovers.

variation (if any)

  • Coconut Key Lime Bars: Add 1/2 cup shredded coconut to the crust and sprinkle toasted coconut on top.
  • Gluten-Free: Use gluten-free graham cracker crumbs or almond flour for the crust.
  • Mini Tartlets: Press crust into a mini muffin pan, bake, fill with filling, and bake just a few minutes until set for individual servings.
  • Lower-Sugar: Substitute a reduced-sugar sweetened condensed milk and use a light dusting of powdered sugar or skip the topping.

Key Lime Bars Citrus Treat

FAQs

Q: Can I use regular limes instead of key limes?
A: Yes. Regular (Persian) limes will work; the flavor is slightly different but still bright and delicious. Adjust zest and juice to taste.

Q: How long do key lime bars keep in the fridge?
A: Stored in an airtight container, they stay fresh for up to 4–5 days. For best texture, keep them chilled until serving.

Q: Can I freeze these bars?
A: Yes. Freeze cut bars in a single layer on a sheet pan, then wrap individually and store in a freezer bag for up to 2 months. Thaw in the refrigerator before serving.

Q: Why did my filling crack or separate?
A: Overbaking can cause cracking or a curdled texture. Remove when the center is slightly jiggly and finish chilling in the fridge to fully set.

Delicious key lime bars topped with zest and whipped cream for a refreshing dessert.

Key Lime Bars

Bright, tangy, and refreshing, these Key Lime Bars are easy to prepare, making them perfect for any occasion, including potlucks and picnics.
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 9 bars
Course: Dessert, Snack
Cuisine: American
Calories: 250

Ingredients
  

Crust
  • 1.5 cups graham cracker crumbs
  • 0.5 cups unsalted butter, melted
  • 1/3 cup granulated sugar
Filling
  • 4 large egg yolks
  • 14 ounces sweetened condensed milk 1 can
  • 0.5 cups key lime juice
  • zest of 2 key limes
Topping
  • powdered sugar for dusting optional

Method
 

Preparation
  1. Preheat the oven to 350°F (175°C).
  2. In a mixing bowl, combine graham cracker crumbs, melted butter, and granulated sugar. Press the mixture firmly into the bottom of a greased 9x9 inch baking dish to form the crust.
  3. Bake the crust for about 10 minutes or until lightly golden.
  4. In another bowl, whisk together the egg yolks, sweetened condensed milk, key lime juice, and key lime zest until smooth.
  5. Pour the key lime filling over the baked crust and spread evenly.
  6. Bake for an additional 15-20 minutes, or until the filling is set but still slightly jiggly in the center.
  7. Allow to cool at room temperature, then refrigerate for at least 2 hours before cutting into bars.
  8. Dust with powdered sugar before serving, if desired.

Notes

Use fresh key lime juice whenever possible for the best flavor. Chill thoroughly before slicing for cleaner cuts.

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