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Key Lime Shortbread Bars

  • 1 1/2 sticks salted butter room temperature
  • 1 1/2 cups all-purpose flour
  • 1/3 cup powdered sugar
  • 2 eggs, room temperature
  • juice of 3-4 key limes or regular limes (about 1/4 cup), strained
  • 1 1/4 cups granulated sugar
  • 1/4 cup all-purpose flour
  • 2 teaspoons cornstarch
  • 1 teaspoon vanilla extract
  • 1/4 teaspoon baking powder
  • 1/8 teaspoon salt
  • 1 teaspoon key lime zest
  • powdered sugar and/or extra lime zest for garnish
  1. Preheat oven to 350˚F. Mix dough ingredients until crumbly dough forms. Press this into an 8”x8” baking dish lined with parchment paper, taking it 1/2” up the sides as well. Bake for 15-20 minutes.
  2. Beat eggs until foamy then add lime juice, granulated sugar, flour, cornstarch, vanilla, baking powder, and salt. Mix until no lumps remain, then stir in lime zest. Pour filling into crust while it’s still warm. Return to oven and bake for 25-28 minutes or until center is no longer jiggly.
  3. Allow to set in the refrigerator for at least 1 hour before adding a dusting of powdered sugar and some extra lime zest on the top. Then cut into 16-25 squares to serve.