School Cookies
["1/3 lb. butter", "1 c. sugar", "1 egg", "2 c. flour", "3 tsp. baking powder", "dash of salt"]
["Mix ingredients well; roll into small balls.", "Roll balls in sugar and cinnamon mixture.", "Bake at 400\u00b0 until light brown."]
["butter", "sugar", "egg", "flour", "baking powder", "salt"]