The Best Onion Burgers in Oklahoma City and El Reno - Eater
"Sid’s Diner is arguably the most famous of the Oklahoma onion burger slingers in El Reno, thanks in part to appearances on shows like Man Vs. Food. As its name might indicate, Sid’s serves a full diner menu, complete with omelets and chicken fried steak for breakfast, but the real draw is the onion burger." - Amy McCarthy
