Soft Sugar Cookies
["3 c. sifted flour", "1 tsp. salt", "1/2 tsp. baking powder", "1/2 tsp. baking soda", "1/2 c. butter (1 stick)", "1 1/2 c. sugar", "2 eggs", "1 tsp. vanilla", "1 c. sour cream (8 oz. carton)", "cinnamon sugar"]
["Measure flour, salt, baking powder and baking soda into sifter.", "Cream butter with sugar until well blended in a large bowl.", "Beat in eggs and vanilla.", "Sift in flour mixture; adding alternately with sour cream and blending well to make thick batter.", "Drop by rounded tablespoonfuls 4 inches apart on greased cookie sheets.", "Spread into 2 inch rounds and sprinkle with cinnamon sugar.", "Bake in hot oven (400\u00b0) for 12 minutes or until lightly golden around edges."]
["flour", "salt", "baking powder", "baking soda", "butter", "sugar", "eggs", "vanilla", "sour cream", "cinnamon sugar"]