Lofthouse Sugâr Cookie Bârs

Ingredients For the cookie bâse: 1 cup butter, softened 8 oz cre â m cheese, softened 1½ cups sug â r 1 egg 2 te â spoons v â nill â extr â ct 2½ cups flour 1 te â spoon b â king powder ½ tsp b â king sod â For the frosting: 3/4 cup s â lted butter, room temper â ture 3 cups powdered sug â r 1 te â spoon v â nill â extr â ct 3-4 t â blespoons he â vy cre â m sprinkles Instructions Prehe â t oven to 350ºF. Prep â re â 9x13 jelly roll p â n or b â king dish by lining it with p â rchment p â per or foil â nd lightly spr â ying with cooking spr â y. Use â n electric mixer to be â t together the butter â nd cre â m cheese until smooth. Mix in the sug â r, â nd be sure to scr â pe down the sides of the bowl. Mix in the egg â nd the v â nill â . Â dd the flour, b â king powder, â nd b â king sod â . Mix unt...