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This Easy Smash Burgers Recipe with Homemade Baconnaise Sauce is built for the nights when you want a diner-style burger without leaving the kitchen. The patties are thin, crisp at the edges, and stacked with melty cheese on toasted buns.
The sauce is the part people remember. Crispy bacon gets folded into a creamy, tangy mayo base, then spread on both sides of the bun so every bite tastes smoky and rich.
Baconnaise burger building blocks
Use beef with enough fat, buns that can handle sauce, and bacon cooked until crisp. The ingredients are simple, so texture matters more than fancy extras.
- Ground beef. An 80/20 or 85/15 blend gives the patties enough fat to brown hard and stay juicy.
- Bacon. Crispy pieces make the sauce smoky and add little salty bites.
- Mayonnaise. This is the creamy base that carries the bacon and condiments.
- Ketchup and mustard. They bring tang, color, and a familiar burger-sauce snap.
- Honey and pickle brine. Honey rounds the bacon's saltiness while pickle brine keeps the sauce bright.
- Shaved onion. Pressed into the meat, it caramelizes against the hot griddle.
- American cheese. It melts fast and drapes over thin patties without fighting the crust.
- Brioche buns. A quick toast gives them enough structure for the baconnaise.
Smash once, stack fast
- Mix the sauce. Cook the bacon until crisp, chop it fine, then stir it into mayo, ketchup, mustard, honey, pickle brine, and chili flakes so the sauce can sit while you cook.
- Shape the beef. Divide the meat into loose 4 oz balls. Do not pack them tight or the patties will cook up dense.
- Heat the surface. Get a griddle or cast iron skillet very hot. A drop of water should skitter quickly across the surface.
- Smash the patties. Place the beef balls down, top with shaved onion, and press hard for 10 seconds. Season the exposed side.
- Flip and melt. Cook until the edges are deeply browned, scrape under the crust, flip, add cheese, and cook until melted.
- Toast and build. Toast the buns cut-side down, spread baconnaise on both halves, stack the patties, and serve right away.
Heat makes the crust
A smash burger works because the beef gets maximum contact with hot metal. That hard contact creates deep browning before the inside has time to dry out. Serious Eats has a useful explanation of the smashed cheeseburger method in its ultra-smashed cheeseburger guide.
Use a wide metal spatula or a burger press with parchment between the press and the meat. Press once, then let the patty sit. If you move it too soon, the crust tears before it sets. For a hotter version with onions and chiles, try these spicy jalapeno-onion smash burgers next.
Sauce texture matters
The bacon needs to be truly crisp before it goes into the mayo. Chewy bacon turns soft in the sauce and makes the whole thing feel heavy. Drain it well, cool it for a few minutes, then chop it small enough to spread evenly.
Pickle brine is my favorite small adjustment here. It cuts through the fat and keeps the baconnaise from tasting flat. If you like homemade sauces, the same tangy idea shows up in this easy homemade tartar sauce and this blooming onion sauce.
Food safety without dry burgers
Ground beef should be cooked safely, but thin smash patties cook quickly. The USDA ground beef guidance recommends 160°F for ground beef, and you can read more at the USDA ground beef safety page. On a very hot griddle, a thin patty usually gets there fast while the cheese melts.
If you are cooking several batches, keep the finished burgers warm for only a few minutes. They are best eaten right away, while the crust still crackles at the edges.
Easy swaps and add-ons
American cheese is classic because it melts almost instantly, but thin cheddar slices work if you want a sharper bite. Add pickles, shredded lettuce, or a thin tomato slice after cooking. Keep the stack light so the beef and sauce stay in charge.
No brioche buns on hand? Potato buns are soft and sturdy. Sesame buns work too, especially if you toast them well. For another burger-night option with a different sauce profile, the Oklahoma smash burgers are worth keeping in rotation.
Storing leftovers cleanly
Store leftover patties and sauce separately. The patties keep for up to 3 days in the fridge, and the baconnaise keeps for about 3 days in a covered container. Reheat patties in a skillet over medium heat until hot, then build fresh burgers with newly toasted buns.
I do not freeze the assembled burgers. The buns get soggy and the sauce loses its clean texture. If you want to prep ahead, shape the beef balls and make the sauce earlier in the day.
Summary
Serve these burgers hot from the griddle with pickles, fries, or a sharp salad to cut the richness.
FAQs
- What is baconnaise sauce made of?
This version uses mayonnaise, crispy chopped bacon, ketchup, mustard, honey, pickle brine, and chili flakes. It tastes smoky, creamy, tangy, and slightly sweet.
- Can I make smash burgers without a griddle?
Yes. Use a heavy cast iron skillet or carbon steel pan and heat it until very hot. Cook one or two patties at a time so the pan does not cool down too much.
- What beef blend works best for smash burgers?
Use 80/20 or 85/15 ground beef. Lean beef can turn dry and will not make the same crisp, lacy edges.
- Can I make the baconnaise sauce ahead?
Yes. Make it up to 3 days ahead and keep it covered in the fridge. Stir it before serving because the bacon and condiments can settle.
- How do I keep the patties juicy?
Handle the meat lightly and smash only once, right after it hits the hot pan. Pressing again later squeezes out juices and breaks the crust.
- What can I serve with these burgers?
Fries, kettle chips, pickles, coleslaw, or a crisp green salad all work well. The burgers are rich, so something acidic or crunchy on the side helps balance the bacon mayo.
