Preparation

• Preheat the oven to 350°F. Prepare an 8×8" pan by spraying with cooking spray or lining with parchment paper, and set aside.
• In a large bowl or the bowl of a stand mixer, beat together ½ cup salted butter, ¾ cup sugar, and zest of one lemon until light and fluffy. Add 2 eggs one at a time, mixing well after each addition. Then add 1 Tablespoon lemon juice. Add ¾ cup flour and ½ teaspoon baking powder, and mix until just combined.
• Pour the batter into the prepared pan and smooth into an even layer. Bake 20-25 minutes, or until a toothpick inserted into the brownies comes out clean. Let cool for 10-15 minutes.
• For the glaze, whisk together ¾ cup powdered sugar, 1 ½ Tablespoons lemon juice and ½ lemon zest, then pour over the brownies, spreading evenly to coat.
• Let cool completely before slicing. Then slice into 16 squares.