Key Lime Bars with Vanilla Wafer Crust

These sweet-tart bars are a wonderful summer dessert. They transport well and are perfect for sharing.

This recipe was adapted from The New York Times, contributed by Samantha Seneviratne. The dollop of lightly sweetened freshly whipped cream was essential.

Yield: 16 bars

For the Crust:

  • 1 (11-ounce) box vanilla wafers
  • 2 tablespoons granulated sugar
  • 8 tablespoons/115 grams unsalted butter, melted

For the Filling:

  • 1 ¾ cup/420 milliliters condensed milk (1 14-ounce can plus 1/2 cup)
  • 5 large egg yolks
  • ¾ cup/180 milliliters Key lime or conventional lime juice (from 5 to 6 conventional limes or 12 Key limes)
  • 1 teaspoon lime zest

For the Topping:

  • 1 cup/240 milliliters cold heavy cream
  • 1 tablespoon confectioners’ sugar
  1. Heat oven to 350 degrees, preferably on convection.
  2. Line a 9-inch square pan with parchment paper, leaving a 2-inch overhang on two sides.
  3. In a food processor, combine vanilla wafers and sugar, and pulse until you have fine crumbs. Add the melted butter and process until evenly moistened.
  4. Transfer mixture to prepared pan and press it down into an even layer. (I use the base of a dry measuring cup.)
  5. Bake until fragrant and a shade darker, 14 to 17 minutes.
  6. Meanwhile, prepare the filling: In a medium bowl, whisk together condensed milk, egg yolks, lime juice and lime zest.
  7. Pour filling over crust (it’s okay if it’s still warm) and bake until the filling is set, about 15 minutes.
  8. Transfer to a rack to cool completely, then cover and refrigerate for at least 4 hours.
  9. Use a sharp knife to release edges. Using the parchment overhang, carefully lift and transfer the bar to a cutting board.
  10. Just before serving, whip heavy cream and confectioners’ sugar until soft peaks form. (I use a chilled bowl.)
  11. Cut bars into 16 squares. Top each bar with a dollop of whipped cream to serve.

Key Lime Bars

I have a few bar desserts to share. Great for a crowd, party or pot luck event. I have made all of these desserts on more than one occasion! Quite an endorsement. 🙂

These tart, tangy, and sweet bars were fabulous- the crust was absolute perfection. I made them off-season and used bottled Key lime juice. They are a must try with fresh Key lime juice! Fresh Key lime slices would also be a lovely garnish.

This recipe was adapted from the Key lime pie from Joe’s Stone Crab in Miami Beach, via Martha Stewart Living.

Yield: 16 bars

  • 1 cup plus 2 1/2 tablespoons finely ground graham cracker crumbs (8 full cracker sheets)
  • 1/3 cup granulated sugar
  • 5 tablespoons unsalted butter, melted
  • 3 large egg yolks
  • finely grated zest of 1 lime (about 1 1/2 tsp)
  • 2/3 cup fresh or bottled Key lime juice (about 23 Key limes total)
  • 1 can sweetened condensed milk (14 ounces)
  • 1/4 cup heavy cream, for garnish, optional
  • 2 Key limes, thinly sliced into half-moons, for garnish, optional
  • confectioner’s sugar, for garnish, optional
  1. Make crust: Preheat oven to 350 degrees, preferably on convection. Line a 8-inch square, or equivalent, baking dish with parchment paper, letting it hang over 2 sides.
  2. Using a food processor, pulse graham crackers into fine crumbs.
  3. Stir together graham cracker crumbs, sugar, and butter in a small bowl. Press evenly onto bottom of the prepared baking dish. (I used the bottom of a dry measuring cup.)
  4. Bake until dry and golden brown, about 10 minutes. Let cool completely on a wire rack. (Leave oven on.)
  5. Make filling: Put egg yolks and lime zest in the bowl of an electric mixer fitted with the whisk attachment. Mix on high speed until very thick, about 5 minutes.
  6. Reduce speed to medium. Add condensed milk in a slow, steady stream, mixing constantly. Raise speed to high; mix until thick, about 3 minutes.
  7. Reduce speed to low. Add lime juice; mix until just combined.
  8. Spread filling evenly over crust using a spatula.
  9. Bake, rotating dish halfway through, until filling is just set, about 10 minutes.
  10. Let cool completely on a wire rack. Refrigerate at least 4 hours (or overnight).
  11. Cut into 2-by-2-inch bars.
  12. Put cream in the clean bowl of an electric mixer fitted with the clean whisk attachment. Mix on medium-high speed until stiff peaks form. Garnish bars with confectioner’s sugar, whipped cream, and/or a slice of lime, as desired.
Note: The bars will keep, wrapped in plastic, in the refrigerator for up to three days.

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