For many years Kelly was a senior editor at Saveur magazine, where she wrote numerous feature and cover stories. She won a James Beard Journalism Award for her article “Hometown Appetites,” an in-depth homage to Clementine Paddleford, and was nominated for the Bert Greene Distinguished Writing Award from the International Association of Culinary Professionals for her piece "Multicultural Meat" about the cross-cultural significance of brisket. Prior to joining Saveur, Alexander worked as an editor at Food & Wine magazine. Her work on food has appeared in TheNew York Times, Gourmet, Newsweek, O: The Oprah Magazine, and many other publications
Alexander is the author of several books, including Myron Mixon's BBQ Rules, Everyday Barbeque with Myron Mixon and Smokin' with Myron Mixon, the best-selling cookbook from "the winningest man in barbecue" that cracked Amazon's top ten rankings. Kelly is also the author of the critically-acclaimed book Hometown Appetites: The Story of Clementine Paddleford, the Forgotten Food Writer Who Chronicled How America Ate, The Great American Cookbook, No Taste Like Home, Try This at Home by Richard Blais, Mr. and Mrs. Sunday’s Suppers by Lorraine Wallace, among others.