Lofthouse Style Frosted Sugar Cookies Ingredients Cookies: 6 Cups all purpose flour 1 teaspoon baking soda 1 teaspoon baking powder 1 Cup. butter, at room temperature 2 Cups. granulated sugar 3 eggs 2 teaspoon vanilla extract 1/4 teaspoon Salt 1 1/2 Cups Sour cream Frosting: 1 Cups butter, room temperature 1 teaspoon vanilla extract 4