These bacon double smash burgers are all about big, bold, beefy flavor with the perfect balance of crispy, juicy, and melty. Every element is carefully chosen to enhance the deep, savory goodness of the burger—right down to the bacon-fat-toasted buns and the simple yet essential burger sauce.If you love a smash burger with crispy edges, gooey cheese, smoky bacon, and just the right amount of sauce, this is your burger. And wow—it really is the ultimate.
kosher salt and freshly ground black pepperas needed
For the Burger Sauce
½cupmayonnaise
2TablespoonsWorcestershire sauce
several grindings black pepper
The Patties
1poundground chuck
For Assembly
4brioche bunssplit with cut sides lightly toasted in a little bacon fat
8slicesAmerican cheese
12slicesbaconcooked to your preferred crispness. I like crisp-chewy
Instructions
For the Caramelized Onions
Slice the onions very thinly.
Heat the olive oil in a large skillet over medium low heat. Add the onions and season with a bit of salt and pepper.
Cook over medium low to low heat, stirring occasionally, until soft and caramelized, about 45 minutes. Set aside but keep warm.
For the Burger Sauce
Stir together the mayonnaise, Worcestershire sauce and black pepper (as much as you like). Set aside.
For the Smashed Patties
Divide the chuck into 8 2-oz patties and lightly roll each portion into a ball.
Heat your ungreased griddle over medium high heat until very hot, about 10 minutes.
Place 2 of the portions (or 4 if you're fancy and your surface is big enough) onto the griddle and press them down firmly until they are flat. Use your spatula to thin out the edges even more so they get extra crispy. Season each patty with some salt and pepper, and sear for about 1 1/2 minutes or until the edges are crispy and you see pale cooked-through spots forming on top.
To Build Your Burger Stacks
Use your scraper to scrape up each burger and flip each patty. Immediately top each one with a slice of American cheese. Top half of the patties with caramelized onions, using about ¼ of the total onions for each burger, or to taste.
Let the burgers cook about 45 seconds to 1 minute, Cook for 45 seconds to 1 minute, then stack a cheese-topped patty over a cheese-and-onion-topped patty. Place each stack in a 200F oven or toaster oven to keep warm just until you've cooked the rest. These burgers hold their best texture for only a short time, so work quickly.
Finish cooking all patties in the same way. When you're done, you'll have 4 stacks of two cheese-topped patties with a layer of caramelized onions in between.
To Assemble
Spread 1 Tablespoon of the mayonnaise mixture on both sides of each bun. Place 3 slices of bacon on each bottom bun and top with a "burger stack" and the top bun.
(Optional) Optional: Wrap each burger in foil and rest for 2-3 minutes. This traps heat, softening the bun for that classic, melty smash burger texture.
Serve immediately. You can add extra toppings of your choosing if you like, but wow, is this combo fantastic all by itself!
Notes
If you don't like mayonnaise, a mixture of ketchup and Worcestershire is also really nice on these burgers. A tangy relish would be a nice counterpoint to these guys.Since the burgers are very savory and rich, a nice side dish is a vinegary slaw. You can even put some (drained) on your burger if you'd like. Also consider some air fryer fries or crispy onion rings as sides.