Step 1

First, preheat the oven to 350, and have an oven rack in the center position. Have ready an 8-inch square pan lined with parchment paper in one direction (with long handles on one side for easy lifting), if your brownie pan isn't non-stick.

Step 2

Combine the melted butter, sugar, lemon zest in a medium bowl. Whisk together well.

Step 3

Next, whisk in the egg and 2 egg yolks very well. Reserve the two extra egg whites for another use.

Step 4

Add the lemon juice and whisk again.

Step 5

Finally, sprinkle the flour, baking powder and salt evenly over the bowl and stir to combine.

Step 6

Spread the mixture in an 8-inch square pan. Bake for 25-27 minutes, until the edges are starting to crackle and turn golden brown. Remove the brownies from the oven and let cool slightly.

Step 7

To make these easy to cut: I actually move them to the freezer for 15-20 minutes. Then, they pop right out of the pan, and then cut into 16 squares.

Step 8

To make the glaze: whisk together the powdered sugar lemon juice and lemon zest. Pour over the brownies and serve.