Robert's Grill

Robert's Grill opened in 1926 — the same year that the U.S. Bureau of Public Roads designated the original Route 66 highway from Chicago to Santa Monica, and at almost exactly the same moment that the El Reno onion-burger tradition was being established by several downtown diners experimenting with Depression-era beef-stretching techniques. The exact founding circumstances are not as well documented as some Route 66-era institutions; the consensus historical claim is that Robert's was operating its current onion-burger preparation method by the late 1920s and has continued the same essential technique without interruption ever since.

Continuous operation since 1926 makes Robert's one of the oldest continuously operating restaurants of any kind in Oklahoma — and almost certainly the oldest continuously operating onion-burger joint in El Reno or anywhere else. The diner has weathered the Depression (the era that invented its signature dish), WWII (when many small restaurants closed temporarily due to rationing and workforce shortages), the post-war boom, the decline of small-town American downtowns through the 1960s-80s, and the Route 66 commercial peak and decline. Through all of it, Robert's has continued serving onion burgers across the same counter at the same location.

The exact ownership history involves multiple transitions over the decades — small diners of this kind frequently change hands as owners retire or pass away — but the continuity of preparation method, menu, and physical space has been remarkably consistent. The combination of long operating history, intact original tradition, and small-scale family-style operation gives Robert's its claim as the most historically authentic El Reno onion-burger institution.

The Robert's space is even tinier than Sid's. The room is a single narrow rectangle with the flat-top grill along one wall and the counter with 10-12 stools along the opposite wall. There are no tables, no booths, no separate dining area. Customers walk in, take a stool at the counter, order from the cook directly, and watch their burger being cooked three feet away. The kitchen is the room is the dining area — everything happens in one small space.

The grill itself is the centerpiece of the experience. The cook works the flat-top continuously through service, with multiple burgers in various stages of preparation across the steel at any given time. The smell of caramelizing onions and grilling beef fills the entire small room. Watching the cook smash patties, flip burgers, and load the cheese onto the meat is genuinely satisfying — this is one of the few American restaurants where you can sit and watch an actual cook actually cooking your specific meal three feet from where you sit.

Decor is minimal: a few framed photographs, vintage Route 66 signage, the usual road-trip ephemera, and the patina of nearly a century of grease and customers. The walls show the texture of long use. The counter shows the wear of decades of forearms. The whole space feels frozen at some point in the mid-20th century, and that frozen-in-time quality is genuinely part of the appeal — Robert's is one of the few American diners where the 'preserved-in-amber' descriptor isn't marketing fluff but accurate description.

The Robert's menu is short and focused. The signature item is the onion burger, available with single, double, or triple patties; with or without cheese; with or without standard burger condiments (mustard, pickles, lettuce). The Robert's standard — and the order that most regulars place — is a double patty with onions, cheese, and mustard. Pickles are a personal preference; many traditional onion-burger enthusiasts prefer the burger plain so the meat-and-onion caramelization isn't masked by other flavors.

Burger prices run $4-7 depending on patty count and toppings. Sides are the standard short list: French fries, tater tots, occasionally onion rings (a genuinely good onion-ring operation given the diner's commitment to fresh-sliced onions). Drinks are fountain sodas, coffee, sweet tea, and sometimes milkshakes. The breakfast menu (the diner opens at 6am — earlier than Sid's 7am) includes biscuits and gravy, eggs, bacon, and breakfast burritos; many local El Reno workers stop at Robert's for breakfast before heading to job sites.

Cash has historically been the standard payment method at Robert's — part of the same bare-bones tradition that defines all of El Reno's classic onion-burger joints. Card acceptance has expanded gradually in recent years but visitors should bring cash to be safe. The hours are Mon-Sat 6am-8pm (notably longer than Sid's 7am-3pm) which makes Robert's a useful option for visitors arriving in El Reno later in the afternoon or for travelers who want an early or late onion-burger meal. Closed Sundays.

Robert's and Sid's are two blocks apart in downtown El Reno (Sid's on Choctaw Avenue, Robert's on Bickford Avenue), both serve the same Depression-era onion-burger specialty, and most serious onion-burger enthusiasts visit both in a single El Reno trip to compare. The two operations have meaningful but subtle differences. Robert's is older (1926 vs Sid's 1990 acquisition), smaller (10-12 stools vs 15), and has longer hours (6am-8pm vs 7am-3pm). Sid's draws more out-of-town traffic thanks to heavier national media coverage; Robert's draws a steadier local breakfast and lunch crowd.

The burgers themselves are extremely similar but with subtle preparation differences. Robert's onions are often described as slightly thinner and crispier on the surface, with a sharper onion flavor; Sid's onions are sometimes described as slightly more caramelized and sweeter. The beef is comparable at both spots — fresh ground beef, no frozen patties, hand-pressed on the grill. Both serve genuinely excellent onion burgers and the comparison is more about personal preference than meaningful quality difference. Many visitors split a single burger at each rather than ordering full meals.

The natural El Reno day plan combining both burger joints with the area's other major stops: 9am-11am at Fort Reno (the substantial historic morning anchor), 11am-12pm at the Canadian County Historical Museum (the Land Run and onion-burger context), 12pm-12:45pm at Sid's for a single burger, 12:45pm-1:30pm walk two blocks to Robert's for a comparison burger, then continue west on Route 66 toward Clinton. The split-burger approach gives visitors the complete El Reno onion-burger experience without the food coma that comes from ordering two full meals at two consecutive sit-downs.