Melt it covered
A lid traps steam and melts the Gruyère fast. That keeps the patty from overcooking while the cheese softens.
Smart Swaps That Fit
Ground turkey can work, but it needs help. Add a tablespoon of olive oil and do not cook it past done. A portobello cap makes a decent meatless version if you season it well and cook out its moisture first.
For a stronger soup flavor, add a teaspoon of sherry vinegar to the onions at the end. For a party, make slider patties and pile the same onions and cheese onto small toasted rolls.
If you want another burger night with a different personality, try Smash Burgers with Bacon Mayo.
Leftovers Without Soggy Buns
Store patties, onions, cheese, and buns separately whenever possible. The patties keep for 3 days in the fridge, and the onions keep for 5 days. Reheat the onions in a skillet with a spoonful of broth until glossy again.
To reheat a full burger, remove the bun if you can. Warm the patty and onions in a covered skillet over low heat, then add the cheese near the end. Toast the bun fresh and assemble just before eating.
Freeze extra onions
Caramelized onions freeze well in small portions. Thaw one for burgers, grilled cheese, or a quick pan sauce.
Juicy French Onion Burgers with Gruyère
Juicy French Onion Burgers with Gruyère
Summary
These burgers are best served hot, with the cheese just melted and the onions spooned on thick.
Juicy French Onion Burgers with Gruyère
Juicy French Onion Burgers with Gruyère
FAQs
What makes these French onion burgers juicy?
Use 80/20 ground beef and mix it only until the seasoning is distributed.
Press a shallow dimple into each patty so it cooks evenly, and never press the burgers with a spatula while they cook.
Can I use Swiss instead of Gruyère?
Yes. Swiss is milder and usually less expensive, but it still melts well with the onions. Gruyère gives a nuttier flavor that tastes closer to French onion soup.
Can I make the onions ahead of time?
Yes. Caramelized onions keep well in the fridge for up to 5 days. Rewarm them in a skillet with a splash of beef broth before spooning them onto the burgers.
Can I cook these burgers on a grill?
Yes. Cook the onions in a cast iron skillet on the grill or make them indoors first.
Grill the patties over medium-high heat, then add the cheese during the last minute and close the lid to melt it.
How do I keep the onions from burning?
Keep the heat at medium to medium-low once the onions start to soften. Stir every few minutes and add a splash of broth whenever the browned bits on the pan look too dark.
What should I serve with French onion burgers?
Fries are classic, but a crisp salad or pickles help balance the rich onions and cheese. Onion rings, roasted potatoes, or a simple slaw also work well.
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