<p>Martha Stewart's upcoming PBS cooking series, Martha Stewart's Cooking School, announced a pair of sponsors on Monday.<p>Retail chain J.C. Penney will serve as the show's presenting sponsor through the first two seasons, while University of Phoenix will be the show's title sponsor for season one.<p>The new teaching series, which is produced by Martha Stewart Living Omnimedia, will debut on PBS stations nationwide beginning the weekend of Oct. 6-7.