Aubrey's Awesome Flattop Onion Burgers
Straight from Oklahoma onion burger country to your game-day griddle.
Aubrey grew up in Oklahoma and learned the onion burger in El Reno, its legendary hometown, at Sid’s Diner and Johnnie’s Grill, two GOAT stops for onion burger fans. Now Aubrey brings it to the lot with a few non-negotiable rules.
Exactly 3 ounces of ground chuck per burger. Not 2.9. Not 3.1. (You do own a food scale, right?) Onions shaved paper-thin on a mandoline. Cheese on top, a small soft potato bun, then yellow mustard and pickles after it leaves the griddle. Never on it.
The magic is the technique: press the onions into the beef, flip once, and let the buns soften in the onion steam right on top of the finishing burger.
Yield: 4 burgers
Equipment: flattop griddle, stiff metal spatula or burger press, kitchen scale, mandoline slicer, food thermometer
Ingredients
- 12 oz ground chuck, divided into four loose balls of exactly 3 oz
- 1–2 large onions, white or a white/yellow mix, shaved paper-thin into long stringy strands (go generous)
- 4 slices American cheese, or more to taste
- 4 small, soft potato hamburger buns (not oversized)
- Yellow mustard, to taste
- Hamburger dill pickle slices, to taste
- Salt, for the beef
Method
- Weigh the beef. Four loose 3 oz balls. Exactly 3 oz. The scale is part of the recipe.
- Shave the onions. Mandoline, as thin as you can go. Long, wispy, stringy strands. Use the hand guard or a cut-resistant glove. Make a big mound for each burger and keep buns, cheese, mustard and pickles close.
- Heat the flattop. Medium-high, so the beef builds a good brown crust. The chuck brings its own fat.
- Drop, salt, pile, smash. Set the balls on the griddle, give each a pinch of salt, pile onions on top and press hard with the spatula or press. You want a thin patty with the onions smashed right into it.
- Flip once. Let the bottom get a deep-brown crust. Scrape under to keep that crust, then flip onion-side down. Let the onions cook against the griddle while the beef finishes. Don’t rush it.
- Cheese and steam the buns. When the beef is nearly done, lay the cheese on top. Set the top bun on the cheese, then balance the bottom bun upside down on top of that. The beef fat and onion steam soften the bread. Cook ground beef to 160°F.
- Finish and serve. Pull off the bottom bun, hit it with yellow mustard and pickles, slide the burger and its steamed top bun on, and serve right away.
Lot notes
- The ratio rules. Three ounces of beef and a modest potato bun. A big bun throws off the balance.
- Mandoline-thin is the rule. The stringier the onions, the better they smash in and cook down. Guard or glove, every time.
- Onions, onions, onions. White gives bite, yellow adds sweetness, a mix is great. They cook way down, so don’t be shy.
- One flip. Give the crust time, then let the onions finish against the flattop.
- Steam, don’t toast. The stacked-bun move is the whole trick.
- Griddle gets onions and cheese only. Mustard and pickles are finishing toppings.
- Tailgate safely. Keep raw-meat tools away from serving tools, keep cold stuff cold and take ground beef to 160°F. More in Food Safety on the Lot.
- Grate-only grill? Bring a flattop or a big cast-iron pan. A grate loses the smash.
Three ounces. A mountain of onions. One flip. Steamed potato bun. That’s Aubrey’s way.
I Love To Tailgate — feed the crew like you mean it.
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