These French Onion Burgers are a hearty sandwich made with an onion flavored beef burger, topped with caramelized onions and Swiss cheese, then sandwiched in an onion roll.
When my kids were little, I always mixed a packet of onion soup mix into our ground beef to make burgers. The flavor of caramelized onion just can't be beat, so I decided to take it a step further and add caramelized onions and Swiss cheese.
Quick Summary
- Onion in the beef, caramelized onions on top, and an onion roll to hold it all together.
- Thick-cut Swiss melted right on the patty, plus which other cheeses work.
- My tips for shaping and cooking the patties so they stay tender and cook evenly.
- How to lettuce wrap it, or serve it on a croissant instead of a bun.
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Key Ingredients
Ground Beef: I like to buy 80/20 or 85/15. The fat is part of what gives the ground beef flavor and I don't like to skimp on it.
Onion Soup Mix: One packet is what gives the burger patties their onion flavor.
Coconut Aminos: Many people use soy sauce here, but I prefer coconut aminos because it is lower in sodium.
Caramelized Onions: When making French Onion Soup, the onions are always caramelized first. Here's how to make Caramelized Onions in a hurry!
Swiss Cheese Slices: I like thick-cut slices, but regular slices work too.
Onion Rolls: You can find these in the bakery section of the grocery store. You need a roll that will hold up to the messiness of this burger, so use a soft but sturdy bun. A brioche roll is another good choice.
How to Make French Onion Burgers
Start by breaking up the ground beef into a large mixing bowl, then add the onion soup mix, coconut aminos, and egg. Mix it together gently, just until combined, and shape it into four patties.
Cook the patties on a hot grill or grill pan. After you flip them, top each burger with a thick slice of Swiss so it melts while the second side finishes cooking. While the burgers cook, butter the onion rolls and toast them on the grill.
Set each burger on the bottom half of a roll, pile on the caramelized onions and add the top of the roll.
Substitutions and Variations
- Substitute soy sauce, Worcestershire sauce, or steak sauce for the coconut aminos.
- Skip the roll and lettuce wrap your burger instead.
- Add crispy cooked bacon to the toppings for a French Onion Burger with Bacon.
Tips
- When mixing and shaping the burger into patties, do so as gently and with as little mixing as possible to avoid overworking the meat.
- Oil the grill grate or grill pan to prevent sticking.
- Before cooking the burgers, place an indent in the center of the patty. This allows the meat to cook more evenly.
- Don't flip the burgers more than once.
- Use a meat thermometer to ensure the burgers are reaching the desired level of doneness.
Serve With
Here are a few of my favorite sides to serve with French Onion Burgers.
You May Be Wondering
Thick-cut Swiss is what I use for these. Gruyere is a great choice too, and provolone or mozzarella slices also work.
Yes! I've used a croissant, and it's a good substitution for a bun. It won't be as sturdy as a regular roll, but who says you can't eat it with a fork?
More Awesome Burger Recipes
If you love a good burger as much as I do, here are a few more to try.
- Butter Burgers
- Blue Cheese Burgers with Bourbon Caramelized Onions
- Patty Melt Recipe with Swiss on Rye
- Grilled Reuben Burgers on Buttered Rye Toast
- Mediterranean Turkey Burgers
When you make this recipe, please leave a ⭐⭐⭐⭐⭐ rating and comment below to let me know what you think. I'd love it if you tag me on Instagram @grumpyshoneybunch so I can see your photos!
📖 Recipe
French Onion Burgers with Caramelized Onions and Swiss
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Ingredients
- 1 pound 80/20 ground beef
- 2 cups Caramelized onions
- 1.3 ounces dry onion soup mix
- 1 tablespoon coconut aminos
- 1 large egg
- 4 onion rolls
- 3 tablespoon butter
- 4 slices thick sliced swiss cheese
Instructions
- In a large mixing bowl, combine the ground beef, onion soup mix, coconut aminos, and egg with your hands until just combined.
- Divide the beef mixture into 4 equal sized patties.
- Place the burgers on the hot pan and cook for 3-4 minutes on each side, until the burger reaches the desired level of doneness. Top the burger with the cheese once it has been flipped.
- Place the cooked burgers on the bottom half of the onion roll. Top with ¼ of the onions on each burger.
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