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wood cake stand piled high with key lime bars topped with key lime zest and a light dusting of powdered sugar. Slices of lime are scattered around the bars.
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5 from 7 votes

Key Lime Pie Bars

These Key Lime Pie Bars are sweet and tart and totally irresistible! Made with the perfect graham cracker crust, a creamy, zesty filling, and a dusting of powdered sugar, they’re the perfect cool and refreshing dessert for summer.
Course Dessert
Cuisine American
Keyword key lime bars, key lime pie bars
Prep Time 5 minutes
Cook Time 32 minutes
Total Time 37 minutes
Servings 16 servings
Calories 187kcal
Author Trish - Mom On Timeout

Ingredients

Graham Cracker Crust

  • cups graham cracker crumbs
  • 6 tablespoons salted butter melted
  • cup granulated sugar

Key Lime Filling

  • 14 ounces sweetened condensed milk 1 can
  • 5 egg yolks
  • ½ cup key lime juice
  • 2 tablespoons key lime zest

Topping

  • powdered sugar optional
  • 2 tablespoons key lime and/or lemon zest optional

Instructions

Graham Cracker Crust

  • Preheat oven to 375°F.
  • Spray an 8-inch or 9-inch square pan with cooking spray and line with parchment paper.
  • Combine graham cracker crumbs, butter, and sugar in a small bowl and stir until combined.
    1½ cups graham cracker crumbs, 6 tablespoons salted butter, ⅓ cup granulated sugar
  • Press the graham cracker crumb mixture into the bottom of the prepared pan and press down firmly. Use the bottom of a measuring cup to really pack it in.
  • Bake the graham cracker crust for 7 minutes. Remove from the oven and let cool.

Key Lime Filling

  • Preheat the oven to 350°F.
  • Whisk the sweetened condensed milk, egg yolks, lime juice and zest together in a medium bowl.
    14 ounces sweetened condensed milk, 5 egg yolks, ½ cup key lime juice, 2 tablespoons key lime zest
  • Pour over cooled crust and bake for 25 minutes. Let the bars chill before serving.
  • Dust with powdered sugar and sprinkle with additional zest if desired. Cut into bars, serve and enjoy!
    powdered sugar, 2 tablespoons key lime and/or lemon zest

Notes

Storage Information
Refrigeration: Wrap the bars tightly with plastic wrap, or store them in an airtight container, in the refrigerator for up to seven days. 
Freezing: The bars can be frozen for up to two months in an airtight, freezer-safe ziplock bag. Thaw overnight in the refrigerator before serving.

Nutrition

Calories: 187kcal | Carbohydrates: 25g | Protein: 3g | Fat: 9g | Saturated Fat: 5g | Cholesterol: 81mg | Sodium: 124mg | Potassium: 121mg | Fiber: 1g | Sugar: 20g | Vitamin A: 285IU | Vitamin C: 2.9mg | Calcium: 86mg | Iron: 0.5mg
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