Key Lime Bars
courtesy of Foodness Gracious
  • For the crust
  • 2 sticks of unsalted butter at room temperature
  • ¾ cup of granulated sugar
  • ¼ cup of packed brown sugar
  • 2 cups of all purpose flour
  • Pinch of salt
  • ½ teaspoon of chopped fresh mint
  • For the lime filling
  • 4 large eggs
  • 1½ cups of sugar
  • 6 tablespoons of flour
  • ½ cup of fresh lime juice (I used about 23 key limes but regular limes would work, enough to make one half cup of fresh juice)
  • 2 teaspoons of lime zest
  • 1 drop of green food coloring
  • Powdered sugar and fresh mint for topping
  1. Preheat oven to 350 degrees. Butter a 9x13- inch baking pan and set aside.
  2. In the bowl of a stand mixer cream the butter and sugars until fluffy, 3-5 minutes. Stop the mixer and scrape the sides of the bowl. Add the flour, salt and mint. Beat on low speed until the mixture just comes together.
  3. Dump the crust mixture into the prepared pan and use your finger tips to spread it out evenly all over the base of the pan. Bake for 18-20 minutes, until slightly browned on top.
  4. To make the filling: While the crust is baking, In a medium bowl whisk together eggs and sugar until light and pale, about 8 minutes. Add the flour, lime juice, lime zest and green coloring. Whisk until completely blended.
  5. Remove the baked base from the oven and immediately pour the filling mix over the hot crust. Return to the oven and bake for 20-25 minutes, until brown around the edges and set in the middle.
  6. Cool completely in the pan. Cut into squares and dust with powdered sugar and more chopped mint. To store lime bars, place in an airtight container in the fridge for up to 4 days.
  7. Cook's Note: We used regular limes because we couldn't locate Key Limes. We are looking forward to trying it with key limes!
Recipe by Sunflower Supper Club at