I visited Roberts Grill in El Reno for one of their famous onion burgers. Roberts is a classic lunch counter dating from the 1920s---simple and comforting. The staff was very welcoming and helpful. My onion burger was great, with plenty of flavor and nice textures from the smashburger preparation. The finely sliced onions came through nicely. Despite this burger's origins in the Depression, Roberts uses a generous helping of ground beef to make their burgers. The fries were great, too. Is the onion burger The Oklahoma Burger? In my opinion, no such thing exists. My family roots run deep in Oklahoma, including El Reno. I have enjoyed numerous burgers throughout Oklahoma over the past half century. I had never heard of the onion burger until coastal media boffins declared the onion burger to be Oklahoma's signature. My recommendation to you is to come to Oklahoma, meet the nice people, enjoy the majestic views, and sample the food for your...