Good FoodRoots, Tubers, Rhizomes and CormsDiane Morgan is the author of Roots : The Definitive Compendium with More than 225 Recipes. Find a recipe for her Three-Layer Parsnip Cake with Cream Cheese Frosting on the Good Food blog .rssShareBy Evan Kleiman • May 12, 2014 • 1 min readDiane Morganis the author of Roots: The Definitive Compendium with More than 225 Recipes. Find a recipe for her Three-Layer Parsnip Cake with Cream Cheese Frosting on the Good Food blog.Evan Kleimanhost 'Good Food'Gillian FergusonSupervising Producer, Good FoodLaryl GarciaSenior Director, Good FoodSarah RogozenAssociate Producer, Good FoodCultureFood & Drink