Preparation Steps

• Preheat your oven to 350°F (175°C). Grease and line a 9x13 inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
• In a medium bowl, combine the graham cracker crumbs and granulated sugar. Pour in the melted butter and stir until well combined and the crumbs are moistened.
  1.5 cups graham cracker crumbs
• Press the crumb mixture evenly into the bottom of the prepared baking pan to form the crust. Bake for 8-10 minutes, or until lightly golden. Remove from oven and let cool slightly.
• While the crust is cooling, prepare the filling. In a large bowl, whisk together the sweetened condensed milk, key lime juice, egg yolks, and lime zest until smooth and well combined.
  1.5 cups graham cracker crumbs
• Pour the lime filling over the cooled crust, spreading it evenly.
• Bake for 15-20 minutes, or until the filling is set around the edges but still slightly jiggly in the center. The center will continue to set as it cools.
• Let the bars cool completely in the pan on a wire rack. Once cooled, cover and refrigerate for at least 2 hours, or until firm.
• Once chilled, use the parchment paper overhang to lift the bars out of the pan. Cut into 16 bars. Serve with whipped cream and lime slices, if desired.