Step 1

Adjust oven rack to middle position and heat oven to 350 degrees. Spray an 8” x 8” pan with nonstick cooking spray.

Step 2

Whisk flour and salt together in medium bowl; set aside.

Step 3

In stand mixer fitted with paddle attachment, beat butter, sugar, and lemon zest at medium speed until light and fluffy, about 3 minutes, scraping down sides and bottom of bowl with rubber spatula.

Step 4

Add eggs 1 at a time, beating well after each addition, about 20 seconds. Add lemon juice and mix to combine.

Step 5

Reduce speed to low and flour mixture, mixing until incorporated.

Step 6

Fold in blueberries.Spoon batter into prepared pan and smooth top.

Step 7

Bake until skewer inserted into brownies comes out clean, 22 to 25 minutes. Cool in pan on wire rack to room temperature.

Step 8

To make the lemon glaze, in a small bowl, whisk together the confectioners’ sugar, lemon juice and lemon zest.

Step 9

Spread over brownies and let harden, about 10 minutes, before serving.