Cutthroat Burger: Salt Lake City's Oklahoma Onion Burger Food Truck Bringing Depression-Era Tradition to Utah's Craft Beer Scene

There's something almost meditative about watching paper-thin onions hit a screaming-hot griddle, that immediate sizzle as they're smashed into a ball of ground beef with the back of a spatula. The aroma — sweet, savory, borderline aggressive — cuts through the yeasty smell of craft beer and makes everyone within a fifty-foot radius look up from their pints. This is what happens every time Cutthroat Burger parks their food truck outside breweries like SaltFire and RoHa Brewing Project in Salt Lake City.

It's not just a burger. It's a century-old technique born from necessity during America's Great Depression, now finding new life on the Wasatch Front. "They showed a deep dedication to burgers by continuing to cook burgers sitting in a metal food truck in over 100 degree weather," one LA-based burger enthusiast noted during a June 2025 visit to Salt Lake City, highlighting the commitment that defines this mobile operation.

The Oklahoma Onion Burger: A Depression-Era Technique Comes to Utah

The story starts almost 1,500 miles east of Salt Lake City, in El Reno, Oklahoma, circa 1922. Ross Davis and his father Homer ran the Hamburger Inn along Route 66, serving travelers headed west. When the Great Railroad Strike hit and beef prices soared, Ross got creative. Onions were cheap — about a nickel for half a bulb — so he started smashing them into his meat patties to stretch the beef further. He called them "Depression Burgers" and sold them for five cents.

What started as economic necessity became culinary genius. The technique is specific: you take a loosely packed ball of ground beef, pile it high with razor-thin sliced onions (we're talking mandoline-thin, almost translucent), then smash the whole thing onto a ripping-hot flat-top griddle. The onions steam into the meat, caramelize in the beef fat, and crisp up at the edges. When you flip it, the onions are underneath, frying in their own juices mixed with beef drippings. The result? A patty that's roughly half onion, with sweet caramelized flavor and crispy texture that absolutely no other burger style can replicate.

Cutthroat Burger has brought this exact technique to Utah's food truck scene, and they're not cutting corners. This is the real deal — the kind of Oklahoma onion burger that would make the old-timers at Robert's Grill in El Reno nod in approval.

Where Craft Beer Meets Smash Burger Perfection

Here's what makes Cutthroat different from the dozens of other burger trucks rolling around Salt Lake City: they've built their entire operation around the brewery partnership model. While most food trucks chase events and office parks, Cutthroat has carved out a niche serving Utah's growing craft beer community at taprooms across the valley.

You'll find them most frequently at SaltFire Brewing Company's South Salt Lake location on West Temple, where founder Ryan Miller has been pushing the boundaries of Utah's craft beer scene since 2016. The pairing makes sense — SaltFire's experimental, high-point beers need food with backbone, and these onion-forward smash burgers deliver. The sweetness of caramelized onions cuts through hoppy IPAs, while the savory beef fat complements darker, maltier brews.

They also make regular appearances at RoHa Brewing Project on Kensington Avenue, where the industrial taproom vibe and commitment to traditional brewing methods align perfectly with Cutthroat's back-to-basics burger philosophy. On bluegrass nights and Firkin Wednesdays, when the brewery's packed with locals nursing pints of Belgian-style ales and farmhouse sauces, the smell of onions hitting the griddle becomes part of the experience.

And there's big news on the horizon: Cutthroat is partnering with SaltFire for their upcoming Midvale location, set to open in early 2026. Unlike SaltFire's current operation, the Midvale brewery will have a full restaurant component, and Cutthroat will be subleasing half the building to provide the dining portion of the taproom menu. It's a converted evangelical church on Main Street, and when it opens, it'll mark Cutthroat's transition from pure food truck operation to a hybrid model with a permanent brick-and-mortar presence.

The Burger That Shows Up on "Best Of" Lists

One visit from the Burger Crew LA in summer 2025 put it simply: "This burger showed up on many 'best of' lists. And it lives up to its name. It is definitely an onion burger." That understated review actually says everything — because when burger obsessives from Los Angeles (a city drowning in smash burger options) acknowledge your onion burger game, you're doing something right.

The technique is everything. Start with 80/20 ground beef — you need that fat content because the onions are going to absorb it, and it's what fries them to that perfect golden-brown crispness. The onions themselves have to be sliced orbital-style through the middle of the bulb (not pole-to-pole), which ruptures more cells and releases maximum oniony flavor and aroma. Yeah, it'll make your eyes water, but that's part of the deal.

Cutthroat piles what looks like an absurd amount of onions onto each beef ball before the smash. Watching them work the griddle, you think, "There's no way that much onion is going into that patty." But it does. The spatula comes down hard — this isn't tentative pressing, it's a committed SMASH — and suddenly that mound of onions is embedding itself into the beef, spreading the patty thin and wide so it hangs over the edges of the bun.

Two to three minutes on the first side, until the edges start to crisp and brown. Then comes the flip — onions now underneath, sizzling directly on the griddle surface, caramelizing in their own sugars and the rendered beef fat. Another minute or so, add American cheese if you want it (and you probably do, because that's how it's been done for a hundred years), then stack the buns on top to steam in the onion vapors before assembly.

The final product is messy in the best way. Onions sprawl beyond the patty. Beef juices soak into the bottom bun. The cheese — if you went with American, and again, you should — melts into every crevice. Pick it up wrong and half the onions slide out onto your plate. This is not an Instagram-pretty burger. It's a functional, delicious, historically-accurate Depression-era burger that happens to taste incredible with a cold Utah beer.

Salt Lake City's Growing Food Truck Burger Scene

Utah's food truck landscape has exploded over the past few years, and burger trucks have been leading the charge. You've got operations like Knockout Burgers and Killer Fries, Burgers On Wheels, and Eat A Burger competing for prime locations around the valley. What sets Cutthroat apart is their commitment to a specific regional style rather than trying to be everything to everyone.

They're not doing pastrami burgers (that's Crown Burger's territory). They're not piling on avocado and sriracha aioli. They're doing one thing — Oklahoma onion smash burgers — and doing it right. That focus matters in a market where food trucks can sometimes fall into the trap of offering twenty menu items and executing none of them particularly well.

The brewery partnership model also gives them a built-in audience of people who are already in the mood to linger, try new things, and appreciate craftsmanship. Taproom customers aren't rushing back to the office or scarfing food between meetings. They're sitting outside on picnic tables, they've got a flight of beers in front of them, and they're receptive to the idea of a burger that takes a few extra minutes to cook properly because it's being smashed to order on a flat-top griddle.

That said, Cutthroat isn't limiting themselves to breweries. They've appeared at Harley-Davidson of Salt Lake City events (where the "amazing food truck" brought free burgers with demo rides in March 2024), and they're available for private events and catering. But the core of their operation — and their identity — remains rooted in Utah's craft beverage community.

What Makes an Oklahoma Onion Burger Work in Utah?

On paper, you wouldn't necessarily expect a Depression-era Oklahoma burger style to blow up in Salt Lake City. But there's a cultural overlap that makes it work. Utah has always had a thing for resourceful, no-frills cooking. This is a place where fry sauce was invented, where pastrami burgers reign supreme, where people genuinely appreciate food that doesn't put on airs.

The Oklahoma onion burger fits that ethos perfectly. It was born from making do with less. It doesn't hide behind trendy toppings or $18 price tags. It's beef, onions, a bun, maybe some cheese and pickles. That's it. And when it's executed correctly — onions shaved thin enough, griddle hot enough, smash forceful enough — it's transcendent.

There's also the outdoor dining culture. Utah's relatively mild spring, summer, and fall weather means brewery patios are packed for months at a time. People want food that pairs with being outside, sitting in the sun, drinking beer with friends. A handheld burger that's designed to be eaten somewhat messily over a picnic table? That's the ideal format.

And let's be real — Utah burger lovers know their stuff. This isn't a market where you can phone it in. Copper Onion's burger has been the gold standard for over a decade. Monday-night smash burgers at Central 9th Market draw lines out the door. Proper Burger Co. has built a mini-empire around doing burgers right. Cutthroat is entering a competitive landscape, but they're bringing something different to it: historical authenticity paired with mobile convenience and brewery integration.

Planning Your Visit to Cutthroat Burger

Here's the thing about food trucks: their schedule is their schedule. Cutthroat posts their locations and hours primarily through Instagram (@cutthroatburger), so follow them there for real-time updates. They're most consistently found at SaltFire Brewing Company in South Salt Lake (2199 S West Temple) and RoHa Brewing Project (30 E Kensington Ave, Salt Lake City).

Typical food truck hours at breweries run late afternoon through evening — think 5pm to 9pm or 10pm, depending on the event. Weekend appearances are common, especially during summer when the taproom crowds are biggest. They also show up for special brewery events: Firkin Wednesdays at RoHa, new beer releases at SaltFire, bluegrass nights, and various craft beer festivals around the Salt Lake valley.

When you order, keep it simple. The Oklahoma onion burger is the star. If you're a purist, go with just the burger, onions, pickles, and mustard — that's the classic Depression-era build. If you want cheese, ask for American; it's what belongs on an onion burger historically, and the way it melts into the caramelized onions is unmatched. Don't overthink it. Let the technique speak for itself.

Expect to pay food truck prices — generally $10-$15 for a burger, which is fair considering you're getting a made-to-order smash burger cooked fresh on a flat-top griddle. Add fries if they're available (food trucks sometimes rotate sides based on what they can execute well in a mobile kitchen).

Pro tip: The onions will make your hands smell like grilled onions for the rest of the evening. This is not a bug, it's a feature. Embrace it.

The Midvale Expansion: What's Coming in 2026

The partnership with SaltFire Brewing for the Midvale location represents a significant evolution for Cutthroat. Opening in early 2026, the new space will give them a permanent kitchen, expanded menu capabilities, and the chance to serve customers beyond the limitations of a food truck setup.

The location itself — a converted church on Main Street in Midvale — positions them in an area that's seeing revitalization efforts along the Redevelopment Agency's corridor. SaltFire received a city loan to renovate the space, with Cutthroat subleasing half the building to provide the restaurant component. Hours will be seven days a week: 11am-10pm Monday through Thursday, 11am-11pm Friday and Saturday, and 10am-9pm on Sundays.

What does this mean for the food? Presumably expanded offerings beyond just burgers, though if they're smart, they'll keep the Oklahoma onion burger as the flagship menu item and build around it. The permanent kitchen setup means better access to refrigeration, more consistent prep capabilities, and the potential for sides and add-ons that are harder to execute from a truck.

But here's hoping they don't lose what makes them special in the first place: that commitment to the Depression-era smash technique, the onion-forward style that sets them apart, and the understanding that sometimes the best burgers are the simplest ones executed with precision and respect for tradition.

Why Cutthroat Burger Matters to Utah's Food Scene

In a landscape increasingly dominated by ghost kitchens, national chains expanding to Utah, and burgers that cost $22 before you add fries, Cutthroat represents something different. They're taking a regional American burger style — one that most Utahns have never encountered — and introducing it to a market that's hungry for authenticity.

The Oklahoma onion burger isn't trendy. It's not going to show up on TikTok with some viral sauce or absurd bacon weave. It's a working-class burger that happens to taste incredible when it's made right. The fact that Cutthroat is executing it correctly, in a food truck, while building genuine partnerships with Utah's craft brewery community, matters.

As one visitor noted, they're cooking "sitting in a metal food truck in over 100 degree weather" because that's what the job requires. There's a work ethic there, a commitment to craft, that mirrors what Utah's best brewers and restaurateurs bring to their own operations. Whether you catch them at a taproom in South Salt Lake or eventually at their permanent Midvale location, you're tasting a burger that connects directly to American culinary history — from the Route 66 diners of the 1920s to a converted church in Utah in 2026.

That's the kind of food story that matters. Not because it's fancy or Instagrammable, but because it's real, it's delicious, and it represents someone caring enough to do one thing exceptionally well.

---

Find Cutthroat Burger on Instagram @cutthroatburger for current locations and hours. Look for them at SaltFire Brewing (South Salt Lake) and RoHa Brewing Project (Salt Lake City), with their permanent Midvale location opening early 2026.