Classic Lemon Cookie Bars topped with lemon buttercream frosting is a delicious and simple lemon dessert that is easy to make!
Preheat the oven to 350 degrees.
Spray a 8x8 baking pan with nonstick cooking spray.
Whisk together the flour, baking powder, and salt in a medium bowl.
In a separate bowl, beat together the butter, cream cheese, and sugar until creamy and well blended.
Add in the egg, lemon juice, lemon zest, and lemon extract. Beat until combined.
Add in the flour mixture and beat until smooth.
Spread the batter into the prepared baking dish and bake for 25 to 30 minutes, until a toothpick inserted in the center comes out clean.
Allow the cookie bars to cool completely, then spread the frosting over the top of the cookie bars. Cut into 9 equal pieces before serving.
To make the frosting, beat together the butter, milk, lemon juice, lemon extract and powdered sugar until smooth and creamy. Optional: add food coloring to tint icing.