01 - 
                Preheat oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper.
              
              
              
                02 - 
                In a large bowl, beat unsalted butter and granulated sugar together until light and fluffy.
              
              
              
                03 - 
                Add eggs one at a time, mixing well after each addition. Blend in lemon juice, lemon zest, and vanilla extract.
              
              
              
                04 - 
                Gently stir in all-purpose flour and salt until just combined. Avoid overmixing.
              
              
              
                05 - 
                Spread the batter evenly into the prepared pan and smooth the top. Bake for 22–25 minutes, or until a toothpick inserted into the center comes out clean.
              
              
              
                06 - 
                Allow the bars to cool completely in the pan before glazing.
              
              
              
                07 - 
                Whisk powdered sugar, lemon juice, and lemon zest together until smooth.
              
              
              
                08 - 
                Evenly spread the glaze over the cooled brownies. Refrigerate for 15 minutes to set.
              
              
              
                09 - 
                Cut into 9 bars and serve.