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When your ordinary-but-still-delicious Key lime pie looks a little mundane at the picnic, it's time to rethink the presentation. Slipping it into a tart pan gives it a bit of elegance, while a blueberry topping adds a splash of color and the texture of fresh blueberries. The flavors are cool and soothing on a hot summer night.

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At a glance

one 9" tart


Choose your measure:


  • 1 1/2 cups graham cracker crumbs or Grahamless Grahams
  • 3 tablespoons granulated sugar
  • 1/8 teaspoon salt
  • 5 tablespoons melted butter


  • 3 large egg yolks
  • 14-ounce can sweetened condensed milk
  • 1/3 cup Key lime juice (juice of 9 to 10 Key limes, if you can find them)
  • 2 teaspoons finely grated lime zest


  • 2 1/2 to 3 cups fresh blueberries
  • 1/2 cup water or fruit juice
  • pinch of salt
  • 1 teaspoon lime juice
  • 3 tablespoons sugar
  • 1 tablespoon cornstarch


  1. Preheat the oven to 350°F.
  2. To make the crust: Mix the ingredients and press them into a 9" removable bottom tart pan or 9" pie plate.
  3. Bake for 10 to 12 minutes, until lightly browned. Place on a rack to cool.
  4. Reduce the oven heat to 325°F.
  5. To make the filling: Whisk together the egg yolks, condensed milk, and lime juice and zest until well blended; the mixture will thicken almost immediately.
  6. Pour into the crust and bake for 18 to 20 minutes, until just set.
  7. Remove from the oven, and place on a rack to cool at room temperature for 1 to 2 hours before topping.
  8. To make the topping: Rinse the berries, and set aside all but 3/4 cup to dry.
  9. Stir together the water or fruit juice, salt, lime juice, sugar, and cornstarch in a medium-sized saucepan set over medium heat, cooking until the sugar has dissolved.
  10. Add the 3/4 cup berries, and bring to a boil.
  11. Remove the topping from the heat, pour it over the reserved berries, and set aside to cool for 5 minutes. Pour the topping onto the tart, letting it spread to the edges.
  12. Chill the tart for several hours before serving. Serve with whipped cream, if desired.
  13. Store tart, well wrapped in the fridge for several days.