1. Stir together flour, cinnamon and KELLOGG'S CORN FLAKES cereal. Set aside.
3. In large mixing bowl, beat together margarine and granulated sugar until light and fluffy. Beat in vanilla. Add cereal mixture, mixing until combined. Stir in nuts. Portion dough using level tablespoon. Shape into balls. Place on baking sheets coated with cooking spray.
4. Bake at 350° about 20 minutes or until lightly browned. Remove from baking sheets. While still warm, roll in powdered sugar. Cool on wire racks. Store in airtight container.