RoadTripFlavors Headquarters U.S.A. RTF Thanksgiving Part 5 of 5: Happy Thanksgiving!   Our fifth and final chapter of the RoadTripFlavors-Style Thanksgiving Feast breaks a long-standing tradition in American kitchens. Green Bean Casserole has been a staple on Thanksgiving tables since it was created by home economists at The Campbell Soup Company in the 1950s. With ease and speed as…