This Small Town Off Route 66 Is Home to One of America’s Most Iconic Burgers—Here's How to Plan the Perfect Crawl

This Small Town Off Route 66 Is Home to One of America’s Most Iconic Burgers—Here's How to Plan the Perfect Crawl

El Reno’s onion burger dates back to the Great Depression—and still draws food lovers today.An onion burger at Robert's Grill, in El Reno, Oklahoma.Credit: Matt Kirouac/Travel + LeisureDuring the Great Depression, restaurant owners in beef-loving Oklahoma faced rising ingredient costs that made even a simple hamburger difficult to serve. But in the small town of El Reno, a western suburb of Oklahoma City along Route 66, one resourceful restaurat…