In a large mixing bowl, combine the lemon cake mix, oil, milk and egg with an electric mixer. Pour batter into prepared pan.
Bake 15 to 18 minutes or until the edges are lightly brown and the center is set.
Remove from oven and allow to cool.
To make the glaze, whisk together your powdered sugar with your lemon juice in a small bowl. Add more sugar if it’s too thin and more lemon juice if it’s too thick. Drizzle glaze over cooled bars.
Bar #42 just might be my favorite. Perfection.