World's Best Sugar Cookie Ingredients Cookies 1 c. butter 1 c. sugar 1 c. sour cream 2 eggs, beaten 2 tsp. vanilla 2 tsp. fresh lemon juice 5 c. flour 2 tsp. baking powder 3/4 tsp. salt 1 tsp. baking soda Glaze 1 c. powdered sugar 2 tsp. milk 2 tsp. corn syrup 1 tsp.