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.