Preheat your oven to 350°F (175°C).

Grease an 11x7 inch baking dish or line it with parchment paper.

In a food processor, combine all-purpose flour, powdered sugar, salt, and cold butter. Pulse until coarse crumbs form.

Press the mixture into the bottom of the prepared pan and bake for 18-20 minutes until golden.

In a mixing bowl, whisk together granulated sugar and a little flour, then add eggs one at a time, whisking until smooth. Mix in lime juice and zest.

Pour the lime filling over the hot crust and bake for an additional 18-20 minutes.

Let cool in the pan for 1 hour, then refrigerate for 1-2 hours before slicing.

Dust with powdered sugar just before serving and enjoy your Lime Bars.