Preheat your oven to 350°F (175°C) and line a 9x13 inch baking pan with parchment paper.

In a mixing bowl, whisk together the flour and salt until well combined. Set aside.

Cream together the softened butter and granulated sugar with an electric mixer for about 3-4 minutes.

Add the eggs one at a time, mixing well after each addition. Fold in the lemon zest, lemon juice, and vanilla extract.

Fold the flour mixture into the wet ingredients until just combined, then pour into the prepared pan.

Spread the batter evenly and bake for 25-30 minutes until golden around the edges.

Cool the brownies in the pan on a wire rack for about 30 minutes.

For the glaze, whisk together powdered sugar, lemon juice, and lemon zest until smooth.

Once cooled, pour the glaze over the brownies and let it set for at least 30 minutes.