Oklahoma Onion Burgers

Isabella

Oklahoma Onion Burgers are a classic diner-style smash burger known for their crispy beef edges, sweet caramelized onions, and melty American cheese. Made with just a handful of ingredients, this nostalgic favorite delivers bold, savory flavor and irresistible texture in under 30 minutes.

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Prep Time 15

Cook Time 12

Total Time 27

Servings: 4 burgers

Course: Dinner

Cuisine: American

Ingredients Method Notes

Ingredients

or the Burgers
Ground beef 1 pound – Choose beef with 20–30% fat for maximum juiciness and crisp edges.
Kosher salt & freshly ground black pepper – Simple seasoning that lets the beef shine.
For the Onion Layer
Yellow or white onions 2 medium or 1 large – Sliced paper-thin; a mandoline works best for even cooking and proper caramelization (about 8–10 ounces sliced).
For Assembly
American cheese slices 4 – Melts smoothly and coats the burger perfectly.
Soft hamburger buns 4 – Sturdy yet pillowy, such as brioche or Hawaiian-style buns.
Optional Toppings
Dill pickle chips – Add crunch and acidity.
Condiments of choice – Mustard is traditional but these burgers are flavorful enough to enjoy plain.

Method

Divide the ground beef into four equal portions. Gently knead each portion briefly until cohesive, then roll into balls. Refrigerate while preparing the onions.
Lightly press each beef ball into a 3-inch disk. Season both sides with salt and pepper. Pile a generous mound of thinly sliced onions on top of each patty.
Heat a large cast-iron skillet over high heat until very hot. Do not add oil.
Place patties onion-side up into the skillet. Smash firmly with a spatula until about 4½–5 inches wide. Season onions lightly with salt and pepper.
Cook undisturbed for 1–2 minutes until crispy edges form. Scrape and flip so the onion side cooks against the skillet.
Top each patty with cheese. Place bun tops over the cheese and bun bottoms on top. Cover and steam for 1–2 minutes until cheese melts and onions caramelize.
Transfer burgers to buns, add optional toppings if desired, and serve immediately.

Notes

Use very thinly sliced onions for proper caramelization. High heat is essential for crispy edges. Avoid overworking the beef to keep burgers tender. These burgers are best enjoyed fresh off the skillet.