With her boisterous personality, warm smile, and delicious Soul Food, Delilah Winder is a local legend in Philadelphia. And when her Mac-n-Cheese was voted best in the nation on the Oprah Winfrey Show, Delilah was dubbed America's Mac-n-Cheese queen. That title has gone undisputed for years. Until now. Delilah thinks the Food Network is throwing her a cookbook release party. But she doesn't know that Bobby Flay is a surprise VIP guest ready to challenge her to a Mac-n-Cheese Throwdown. Will Bobby's 5-cheese Mac-n-Cheese match up to Delilah's whopping 7-cheese wonder? Of course, there's only one Big Cheese in this game!