1Heat oven to 350°F.
2In large bowl, stir together cookie dough and flour. Shape dough by rounded tablespoonfuls into balls; roll balls in sugar. On ungreased cookie sheet, place balls 2 inches apart. Press bottom of drinking glass on each ball until about 1/4 inch thick.
3Bake 9 to 11 minutes or until light golden brown. Immediately sprinkle with additional sugar. Cool 1 minute; remove from cookie sheet to wire rack. Store loosely covered. Do not stack cookies.