Creating the Best Lemon Brownies is simpler than you might think! Follow these straightforward steps:

1. Preheat the oven to 350°F (175°C). Grease and line a 9×13 inch baking pan with parchment paper, allowing some to hang over the edges for easy removal.
2. Mix Butter and Sugar: In a large bowl, combine the melted butter and granulated sugar. Stir until well combined.
3. Incorporate Eggs: Add the eggs, one at a time, mixing thoroughly after each addition. Then, stir in the vanilla extract and lemon zest.
4. Whisk Dry Ingredients: In a separate bowl, whisk together the flour and salt. Gradually add this mixture to the wet ingredients, stirring just until smooth—do not overmix.
5. Pour into Pan: Spread the brownie batter evenly in the prepared baking pan.
6. Bake: Place in the preheated oven and bake for 25-30 minutes. The brownies should be set with a slight jiggle in the center.
7. Cool Completely: Remove from the oven and allow the brownies to cool in the pan for about 30 minutes. Then, lift them out using the parchment paper and transfer them to a wire rack to cool completely.
8. Prepare Lemon Frosting: In a small bowl, mix the powdered sugar with lemon juice until smooth and spreadable. For additional brightness, you can add more lemon juice or zest as desired.
9. Frost the Brownies: Once the brownies are cool, gently spread the lemon frosting over the top.
10. Garnish: Optionally, sprinkle with additional lemon zest for an extra pop of color and flavor.

These simple steps will guide you effortlessly to create delightful lemon brownies!