Preheat the oven to 350°F (175°C).
Grease an 8-inch square baking dish and line it with parchment paper for easy removal.
In a large mixing bowl, beat together butter, sugar, flour, and salt until well combined.
In a separate bowl, whisk eggs, lemon juice, and lemon zest.
Combine the wet and dry ingredients and mix on medium speed until smooth (about 2 minutes).
Pour the batter into the prepared baking dish and spread evenly.
Bake for 23-25 minutes or until a toothpick inserted in the center comes out clean.
Let the brownies cool completely before adding the glaze.
In a small bowl, whisk together powdered sugar, lemon juice, and lemon zest until smooth and thick.
Spread the glaze over the cooled brownies and let it set for 10 minutes before slicing.
