Sugar Cookie Bars

Just made this last night for FHE.

It's basically a sugar cookie without quite all the work.  The boys LOVED it.  Per the instructions, I was so afraid to over bake it that I ended up under baking it instead.  I would bake it closer to the 13 (maybe even 14?) minutes, not the 10.  

Ingredients

Bars:
• 3/4 cup butter (1 1/2 sticks), softened to cool room temperature
• 3/4 cup granulated sugar
• 1/4 cup powdered sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 1/2 tablespoon lemon zest (optional)
• 2 1/4 cups all-purpose flour
• 1 teaspoon baking powder
• 1/2 teaspoon salt
Frosting:
• 6 tablespoons butter, softened
• 2 1/2 cups powdered sugar
• 3 tablespoons milk or cream
• 1/4 teaspoon vanilla extract
• Sprinkles (optional)

Directions

1. Preheat oven to 375 degrees F.
2. In a large bowl, cream together the butter, granulated sugar and powdered sugar until light and fluffy. Add the eggs and vanilla and mix for 1-2 minutes. Stir in the lemon zest, flour, baking powder and salt. Mix until combined.
3. Lightly grease a 9X13-inch baking pan with cooking spray. Press and/or spread the sugar cookie mixture gently into an even layer into the bottom of the pan.
4. Bake for 10-13 minutes. Don't overbake! The bars shouldn't have any color around the edges and barely be set in the middle. Let the bars cool completely before frosting.
5. For the frosting, cream together the butter and powdered sugar until smooth (if the mixture has trouble coming together, add a drop or two of milk). Add in the vanilla and mix. Add the milk or cream and mix until the frosting is light and fluffy. Add food coloring, if desired.

~From melskitchencafe.com