Heat oven to 350°F. In small bowl, mix sugar and cinnamon.
In large bowl, break up cookie dough. Stir or knead in flour until well blended. Reshape into log. Cut cookie dough into 32 (1/4-inch) slices. Shape each into ball and roll in sugar-cinnamon mixture; place 2 inches apart on ungreased cookie sheets.
Bake 10 to 14 minutes or until edges are golden brown. Cool 1 minute; remove from cookie sheets to cooling rack.