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Key Lime Bars

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5 from 1 review

  • Total Time: 65 minutes
  • Yield: 16 - 20 bars 1x


Units Scale


  • 1 1/4 cup graham crackers crumbs
  • 2 tablespoons brown sugar
  • 5 tablespoons butter, melted


  • 2 cans (14 oz each) sweetened condensed milk
  • 1/2 cup lime juice
  • 1/2 cup sour cream (or Greek yogurt)
  • 1 large egg yolk
  • 2 tablespoons lime zest


  • 2/3 cup heavy cream
  • 1 teaspoon vanilla
  • 3 tablespoons sugar
  • 1/4 cup toasted shredded coconut (optional)



  1. Line an 8×8 baking dish with aluminum foil. Spray lightly with cooking spray.
  2. Combine graham cracker crumbs, sugar and melted butter in a medium bowl and mix well. Press graham cracker mixture evenly into the bottom of the prepared pan. Bake crust at 325°F for 15 minutes. Let cool.


  1. In a medium bowl, mix sweetened condensed milk, key lime juice, sour cream and egg yolk. Mix until well combined. Pour filling into pan with cooled crust.
  2. Bake in a shallow water bath at 325°F for 40 minutes.
  3. Remove from water bath and let cool for about an hour then cover and chill in the refrigerator for at least an 2 -3 hours, but preferably overnight.
  4. When ready to serve, pull foil out of dish and carefully fold it down, releasing the bars.


  1. In a small bowl, whip the cream, sugar and vanilla until it forms stiff peaks.
  2. Top bars with whipped cream and sprinkle with shredded coconut (if desired).


  • Key limes are not always easy to find, they’re small and are kind of a pain to juice, so I just use regular limes in thees bars.
  • Prep Time: 10 minutes
  • Cook Time: 55 minutes
  • Category: Brownies & Bars
  • Cuisine: American