Delectably sweet and tart, these lilikoi bars are a sure crowd pleaser!
To make the crust, first preheat the oven to 350° F and butter a 9"x13" cake pan. In a mixing bowl, mix the powdered sugar & 1 ½ cups of flour with a whisk until well incorporated. Add butter & crushed macadamia nuts and mix until a smooth dough forms. Transfer dough to the buttered pan and press evenly, covering the bottom and going ¼“ to ½” up the sides. Cover the crust with a piece of parchment paper, place another 9"x13" pan onto the parchment and weigh down with marbles, beans or rice to evenly distribute weight. Bake until crust is a deep golden brown, about 25-30 minutes. While the crust is baking, prepare the filling.
In a mixing bowl, whisk ½ cup of flour & sugar. Add the juices & lemon zest, then stir until dissolved. In a separate bowl whisk the whole eggs, the egg yolk, and a pinch of salt. Add the eggs to the juice mixture, stir to combine. Then pour the filling directly onto the baked crust.
Reduce oven temperature to 275° F and bake until center is no longer wobbly, about 30-40 minutes. Check by placing a toothpick in, you’ll know it’s done when the toothpick comes out clean.
Let cool completely before slicing, and dust with powdered sugar before serving.