Direction

1. Preheat the oven to 350 degrees F (180 degrees C). Lightly grease an 11x7-inch baking dish.
2. Mix lemon cake mix, canola oil, eggs, and vanilla extract in a bowl until well combined. Spread the mixture in the prepared dish in an even layer.
3. Bake in the preheated oven until a toothpick comes out clean when inserted into the center, 16 to 18 minutes. Allow brownies to cool for about 20 minutes.
4. Meanwhile, combine 1 1/2 cups confectioner’s sugar, lemon zest, and lemon juice in a bowl; whisk until smooth; add more sugar as needed for a smooth, spreadable glaze. Stir in salt.
5. Spread lemon glaze evenly over brownies and let stand until completely cooled. Refrigerate until ready to serve; cut into 12 squares.