1-First Step: Preheat and Prepare Start by preheating your oven to 350°F and getting your 8×8 inch baking pan ready by spraying it with cooking spray or lining it with parchment paper. This step ensures even baking and easy removal later. For vegan adaptations, use plant-based spray if needed to keep things simple.

2-Second Step: Cream the Butter Mixture In a large bowl or stand mixer, beat together 1/2 cup softened salted butter, 3/4 cup granulated sugar, and the zest of 1 lemon until the mixture is light and fluffy; this usually takes about 2-3 minutes. This process builds the base flavor for your lemon brownies and incorporates air for a better rise. If making a low-calorie version, swap the sugar here for your chosen substitute.

3-Third Step: Add Eggs and Lemon Juice Add the 2 large eggs one at a time, mixing well after each to fully incorporate them into the batter. Then, mix in 1 tablespoon of fresh lemon juice for that zesty kick. For gluten-free lemon brownies, ensure your baking powder is certified gluten-free at this stage to avoid any issues.

4-Fourth Step: Combine Dry Ingredients Mix in 3/4 cup all-purpose flour and 1/2 teaspoon baking powder until just combined, being careful not to overmix; this keeps your lemon brownies tender. If you’re going vegan, add your flax egg replacements here and stir gently. The batter should be smooth and ready for the pan.

5-Fifth Step: Bake the Brownies Pour the batter into your prepared pan and smooth the surface evenly. Bake for 20 to 25 minutes, or until a toothpick inserted in the center comes out clean. Keep an eye on the timer to prevent overbaking, which can dry out your zesty lemon treats.

6-Sixth Step: Cool and Prepare Glaze Let the brownies cool in the pan for 10 to 15 minutes before moving to a wire rack. For the glaze, whisk together 3/4 cup powdered sugar, 1 1/2 tablespoons fresh lemon juice, and zest of 1/2 lemon until smooth. For low-calorie options, use a sugar alternative in the glaze as well.

7-Final Step: Glaze and Serve Pour the glaze over the cooled brownies and spread it evenly, then let it set completely before slicing into 16 squares. This final touch enhances the flavor of your lemon brownies and makes them ready for serving. Enjoy them fresh, and remember to adapt for dietary needs like using gluten-free flour for a firmer texture.