Name: Oklahoma Onion Smash Burger Recipe
Prep time: 25 min
Cook time: 15 min
Total time: 40 min
Cuisine: American
Ingredients: 1.5 pounds ground beef (80/20); 2 large onions, sliced thin; 1 teaspoon kosher salt (for onions); Salt to taste (for seasoning patties); 1 teaspoon pepper; 1/2 cup mayonnaise; 3 tablespoons ketchup; 2 tablespoons yellow mustard; 1.5 tablespoons sweet relish; 1.5 tablespoons hot sauce; 1 teaspoon salt; 1 teaspoon pepper; 12 slices American cheese; Pickles (as desired); Brioche buns

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If you have a craving for a burger that packs an unforgettable punch of flavor and a texture that’s irresistibly juicy and crispy, then this Oklahoma Onion Smash Burger Recipe is exactly what you need in your life. This classic burger combines thin, beautifully caramelized onions with ultra-thin smashed beef patties cooked to perfection, layered with melty American cheese tucked between soft brioche buns. It’s a timeless favorite that delivers so much personality and soul in every bite, making it a true must-try for burger lovers everywhere.

Ingredients You'll Need

The image shows raw ingredients for making burgers on a white marbled surface. At the top center, there is a white tray filled with pink ground meat placed on a white plate. To the right of the meat tray, there is a bowl filled with thinly sliced white onions. Below the onions, there are two sesame seed-topped hamburger buns placed side by side. To the left of the buns, there are layers of light yellow cheese slices stacked neatly. In the middle, there are small glass bowls arranged in a curved line, containing black and white pepper mix, green relish, red ketchup, white mayonnaise, red hot sauce, and yellow mustard from top to bottom. The photo taken with an iphone --ar 4:5 --v 7

These ingredients are wonderfully simple yet essential to crafting the perfect balance between savory, tangy, and sweet elements. Each one plays a key role, from the richness of the 80/20 ground beef to the freshness of the pickles and the burst of flavor from the homemade burger sauce.

1.5 pounds of ground beef 80/20: Ideal fat ratio for juicy, flavorful patties that don’t dry out when smashed thin.
2 large onions, sliced thin: Thinly sliced to caramelize beautifully and infuse the burger with sweet, savory depth.
Pickles: Add a tangy crunch that perfectly complements the rich meat and onions.
12 slices American cheese: Melts smoothly over the patties for that classic creamy, gooey texture.
Brioche buns: Soft and slightly sweet buns that hold up well and add a luxurious touch.
Salt: Essential for seasoning both the beef and onions, enhancing their natural flavors.
½ cup mayo: Creamy base for the burger sauce, adding moisture and richness.
3 tablespoons ketchup: Brings a familiar tomato sweetness to the sauce.
2 tablespoons yellow mustard: Adds a gentle tanginess and mild heat to balance the ketchup.
1.5 tablespoons sweet relish: Small bursts of sweetness and texture in the sauce.
1.5 tablespoons hot sauce: A spicy kick that wakes up all the other flavors.
1 teaspoon pepper: Adds just the right amount of warmth and bite.
1 teaspoon kosher salt: For properly salting the onions and drawing out moisture.

How to Make Oklahoma Onion Smash Burger Recipe

A clear glass bowl holds thinly sliced white onions with some light green parts visible near the edges. The onion slices are layered loosely and fill half of the bowl. The bowl is placed on a white marbled surface with soft natural light creating subtle shadows around it. photo taken with an iphone --ar 4:5 --v 7

Step 1: Prepare the Onions

Start by thinly slicing the onions using a mandolin or a sharp knife, aiming for paper-thin slices. Toss these slices with kosher salt and let them rest for about 20 minutes to draw out excess moisture, which intensifies their sweetness and makes them perfect for the smash technique. After resting, make sure to squeeze out as much liquid as possible to prevent sogginess during cooking.

Step 2: Form and Chill the Beef Balls

Next, divide your 80/20 ground beef into equal portions—about ¼ pound each—and gently roll them into balls. Chilling these balls in the refrigerator for 15 minutes firms up the meat, making it much easier to smash thin without breaking apart on the griddle.

Step 3: Heat the Griddle

Preheat your griddle on high heat for at least 10 minutes. A sizzling hot surface is essential for that sought-after crispy crust on the burger. If your griddle tends to stick, lightly oil it just before cooking the patties.

Step 4: Whip Up the Signature Burger Sauce

While the griddle heats, make the mouthwatering burger sauce by whisking together mayo, ketchup, yellow mustard, sweet relish, hot sauce, salt, and pepper until smooth. This tangy, creamy sauce is the perfect partner to the savory, caramelized onions and juicy beef.

Step 5: Smash the Beef Balls With Onions

Place the chilled beef balls directly onto the hot griddle. Immediately pile a generous handful of the salted onions on top of each ball, then smash them down flat as thin as possible with a sturdy spatula or burger press. This smashing step creates maximum crispy edges and locks in flavor, while cooking the onions right on the patty infuses every bite with smoky sweetness. Season the patties with salt and pepper as they cook.

Step 6: Cook and Add Cheese

Cook the patties for about 4 minutes until the edges are deeply browned and crisp. Flip the patties, season the other side, and cook for another 2 minutes. At this point, drape each patty with a slice of American cheese, letting it melt perfectly over the hot surface.

Step 7: Steam the Buns

Place the top bun directly on the cheese while still on the griddle, then stack the bottom bun on top and close the lid or cover the griddle for a few minutes. This steaming step softens the buns just enough to make every bite flawlessly tender and cohesive.

Step 8: Assemble and Serve

Remove the buns carefully, spread a generous layer of the prepared burger sauce on the bottom bun, and add pickles if you like that crunchy tang. Layer one or two cheesy patties on top, then crown with the steamed top bun. Serve your Oklahoma Onion Smash Burger Recipe immediately to enjoy the perfect harmony of textures and flavors at their best.

How to Serve Oklahoma Onion Smash Burger Recipe

Garnishes

Simple garnishes can elevate your burger experience. Fresh pickle slices provide a zesty contrast to the rich meat and cheese, while a few thin rings of raw red onion add a bright crunch. Some fresh lettuce or a tomato slice can also add freshness, but keep it classic to highlight the smoky onions and sauce.

Side Dishes

Traditional sides like crispy golden fries or thick-cut potato wedges pair beautifully with this burger. For a lighter option, try coleslaw or a crunchy pickle salad that complements the savoriness without overpowering it. These side dishes keep the meal balanced and satisfying.

Creative Ways to Present

If you're serving this Oklahoma Onion Smash Burger Recipe for a casual get-together, consider setting up a burger bar with extra toppings such as different cheeses, bacon, or spicy jalapeños. You can also serve mini sliders version by using smaller buns and patties, perfect for parties or game days.

Make Ahead and Storage

Storing Leftovers

Store any leftover patties and onions in an airtight container in the refrigerator for up to 2 days. Keep buns separate to prevent sogginess. The beef and onions remain flavorful but may lose some crispiness over time.

Freezing

If you want to freeze patties, assemble them individually in wax or parchment paper before placing in a freezer bag. They can be frozen for up to 3 months. It’s best to freeze uncooked beef balls or fully cooked patties without the buns to preserve texture and flavor.

Reheating

Reheat patties gently on a skillet over medium heat to regain some of the crispy edges. Avoid the microwave if possible, as it can make the meat rubbery. Toast buns separately to keep them fresh and warm before assembling your leftovers.

FAQs

What makes the Oklahoma Onion Smash Burger Recipe different from other burgers?

The key difference is the smashed technique combined with the thinly salted onions cooked directly on top of the patty. This creates a unique texture with crispy edges and deeply caramelized onions that infuse every bite with rich flavor you don’t get from traditional burgers.

Can I use other types of beef for this burger?

Ground beef with an 80/20 fat ratio is preferred for the perfect juicy texture. Lower fat beef can make the patties dry, while higher fat content might cause excessive flare-ups on the griddle. However, some enjoy experimenting with brisket blends or chuck beef for extra flavor.

Is it necessary to use a griddle for smashing the burgers?

A flat, heavy griddle is ideal because it maintains steady, high heat necessary for that perfect sear. You can use a cast-iron skillet if you don’t have a griddle, but avoid non-stick pans as they don’t develop the same crust.

What can I substitute if I don’t have brioche buns?

Any soft, slightly sweet, and sturdy bun will work well. Potato buns or classic hamburger buns are great alternatives that can hold up to the juicy patties and keep the burger intact while eating.

Can I make the burger sauce ahead of time?

Absolutely! The burger sauce actually tastes better after sitting for a few hours as the flavors meld together. You can prepare it a day in advance and store it in the refrigerator until ready to use.

Final Thoughts

You really can’t go wrong with this Oklahoma Onion Smash Burger Recipe. It’s a crowd-pleaser that brings both nostalgia and incredible flavor to your dinner table. If you love that perfect balance of crispy, juicy, and tangy all in one bite, I wholeheartedly encourage you to try making this at home—you’ll wonder how you ever lived without it.

Ingredients You'll Need