Preheat your oven to 350°F (180°C). Line a 9x13-inch baking dish with parchment paper.

In a medium bowl, whisk together the flour and 1/2 cup of the granulated sugar. Add the softened butter and use your fingers or a pastry blender to work it into the flour mixture until it resembles coarse crumbs.

Press the crumb mixture evenly into the prepared baking dish. Bake for 20-25 minutes, or until the edges are lightly golden.

While the crust is baking, prepare the lemon filling. In a large bowl, beat the eggs, lemon zest, and lemon juice until well combined.

In a separate bowl, whisk together the confectioners' sugar and salt. Add this mixture to the egg mixture and beat until smooth.

Once the crust is ready, remove it from the oven and let it cool for a few minutes. Pour the lemon filling over the crust and smooth the top.

Return the bars to the oven and bake for an additional 20-25 minutes, or until the filling is set and the edges are lightly golden.

Remove the bars from the oven and let them cool completely, preferably on a wire rack. Dust with powdered sugar before cutting into bars.