Tasty Gruyère Onion Burgers

Featured in: Bold Recipes from the Grill

These fancy burgers take the yummy flavors from onion soup and turn them into a burger with soft, sweet onions, melty Gruyère, and you can even get some broth on the side for dipping.

A woman in a kitchen with a stove and oven.
Updated on Fri, 25 Apr 2025 18:45:37 GMT
A tempting shot of a homemade burger with a thick beef patty, dripping cheese, golden onions, and a glossy bun with fresh herbs on top. Pin it
A tempting shot of a homemade burger with a thick beef patty, dripping cheese, golden onions, and a glossy bun with fresh herbs on top. | cookingkitchn.com

I whipped up this French Onion Soup Burger during a random kitchen adventure and wow, it's changed everything. Take a bite of this juicy patty topped with caramelized sweet onions and melted Gruyère - it's basically your beloved French onion soup transformed into the tastiest burger ever. My kitchen always smells absolutely incredible whenever I cook these up.

What Makes These Special

These burgers take all the warm, comforting elements of French onion soup and pack them into a mouthwatering burger experience. And guess what? You don't need anything fancy or any special cooking tricks. Whenever friends eat these at my place, they're shocked I made them myself - they honestly taste like something from a nice restaurant.

Key Components

  • Ground Beef: Stick with 80/20 for the juiciest results. The fat percentage really does matter, I promise.
  • Onions: Sweet onions work best, cooked slowly until they turn soft and golden brown.
  • Gruyère Cheese: It melts beautifully and brings that wonderful nutty flavor to the party.
  • Buns: Go for something substantial that won't fall apart under all the toppings.
  • Beef Broth: Add a little while cooking the onions for extra flavor depth.
  • Butter and Olive Oil: Using both helps get those onions perfectly caramelized.
  • Seasonings: Plain salt and pepper do the job great, and fresh thyme is awesome when available.

Simple Cooking Instructions

Time to Eat
Serve everything while it's hot. These burgers pair wonderfully with some crispy french fries or a light side salad.
Build Your Burgers
Place your hot burger on the bun, add a generous heap of those gorgeous onions, then let the Gruyère melt all over everything.
Make Your Patties
Mix the beef with plenty of seasoning, form into patties, and cook to your liking. I prefer a cast iron pan, but they're great on the grill too.
Get Those Onions Going
Cut onions into thin slices, toss them in a pan with butter and olive oil, and cook slowly. Stir occasionally and add splashes of beef broth when needed. They'll take around 30 minutes to turn perfectly golden.

Ways to Get It Right

Don't rush those onions - they need that slow cooking to get really good. Can't find Gruyère? Swiss works just fine. Always toast your buns, it's a game-changer. And give your burgers a few minutes to rest after cooking so they stay nice and juicy.

A mouthwatering cheeseburger featuring melted cheese and sweet caramelized onions on a shiny brioche bun, topped with fresh herbs and a sprinkle of sea salt. Pin it
A mouthwatering cheeseburger featuring melted cheese and sweet caramelized onions on a shiny brioche bun, topped with fresh herbs and a sprinkle of sea salt. | cookingkitchn.com

Tasty Alternatives

I've tried these with ground turkey when we want something lighter. You can use any cheese that melts well if you feel like changing things up. Adding some garlic-sautéed mushrooms on top is amazing, and lately I've been putting them on brioche buns for extra sweetness.

Fits Every Gathering

These have been hits at family dinners, friend get-togethers, and quiet nights in. They never fail to wow everyone. Grab your favorite beer or pour some red wine and you've got yourself an incredible meal that feels special.

Frequently Asked Questions

→ How much time does it take to soften onions?

You'll need about 20-25 minutes to get them nice and sweet.

→ Is it okay to leave out wine?

Sure thing, just add more beef broth instead.

→ What other cheeses work well?

Try Swiss or provolone if you don't have Gruyère.

→ What's special about 80/20 beef?

The fat makes your burgers stay moist and tasty.

→ Can I cook the onions beforehand?

Absolutely, just warm them up before you serve.

Gruyère Onion Burgers

Plump patties covered with soft, sweet onions and gooey Gruyère on soft buttery buns. Just like eating at a fancy café.

Prep Time
30 Minutes
Cook Time
35 Minutes
Total Time
65 Minutes
By: Sophia

Category: Grilled Goodness

Difficulty: Intermediate

Cuisine: American-French

Yield: 4 Servings (4)

Dietary: ~

Ingredients

01 2 big onions, cut into slices.
02 2 tablespoons unsalted butter.
03 1 tablespoon virgin olive oil.
04 1 teaspoon granulated sugar.
05 1/4 teaspoon regular salt.
06 1/4 cup beef stock.
07 1/4 cup dry white wine (skip if you want).
08 1 1/2 pounds ground chuck (80/20 mix).
09 1 teaspoon tangy Worcestershire sauce.
10 1 teaspoon cooking salt.
11 1/2 teaspoon cracked black pepper.
12 4 slices nutty Gruyère cheese.
13 4 soft brioche rolls.
14 2 tablespoons melted butter.
15 Fresh thyme leaves (if you like).

Instructions

Step 01

Cook onions slowly for 20-25 minutes till they turn soft and golden brown.

Step 02

Pour in beef stock and white wine if using to scrape up tasty bits.

Step 03

Combine ground chuck with Worcestershire sauce, salt, and pepper. Shape into four even patties.

Step 04

Cook the patties about 4-5 minutes on each side.

Step 05

Top each patty with Gruyère and wait till it gets melty.

Step 06

Brush the rolls with melted butter and lightly toast them.

Step 07

Stack burgers with the sweet onions, sprinkle with thyme if wanted, and serve with extra broth on the side.

Notes

  1. Be patient when cooking the onions.
  2. You can make the onions a day before.
  3. Handle the meat gently for juicy burgers.
  4. The extra broth makes a great dip.

Tools You'll Need

  • Heavy bottom pan.
  • Flat cooking surface or grill.
  • Big bowl for mixing.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Milk products (butter and cheese).
  • Wheat (in the rolls).

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: ~
  • Total Fat: ~
  • Total Carbohydrate: ~
  • Protein: ~