Lofthouse Sugar Cookie Bars

From Cookies and Cups
Cookies:
1-1/2 cups sugar
1 cup butter, room temperature
8 oz cream cheese, room temperature
1 egg
2 tsp. vanilla extract
2 -1/2 cups flour
1/2 tsp. baking soda
1 tsp. baking powder

Frosting:
1/2 cup butter, softened
4 cups powdered sugar
8 TBS milk
1 tsp. vanilla extract
food coloring, optional
sprinkles, optional

1. Preheat oven to 350℉.  Line a jelly roll pan (15x10x1) with aluminum foil and spray lightly with cooking spray if desired or just spray the pan.
2. In your mixer cream butter, cream cheese and sugar together. Add in egg and vanilla and mix until incorporated.
3. With mixer on low, add in your dry ingredients: flour, baking powder and baking soda.  Mix until just combined.
4. Press dough evenly into your prepared pan. (dough will be sticky)
5. Bake for 20 minutes until edges begin to golden.
6. Cool completely before frosting.
7.  To make frosting cream together the butter and powdered sugar.   Add milk and vanilla and mix until smooth.  Add food coloring if desired.  Frost cooled bars and sprinkle if desired.