Description
Inspired by the rich, savory flavors of classic French onion soup, these burgers are packed with juicy beef, caramelized onions, and melty Gruyère cheese. The buttery garlic buns and hint of thyme elevate this burger into a gourmet experience, perfect for a satisfying dinner or weekend cookout.
Ingredients
Burger
1 lb ground beef
Salt and pepper as needed
2 tablespoons Worcestershire sauce
Caramelized Onions
2 large onions, cut into thin slices
2 tablespoons butter
1 teaspoon sugar
1/2 cup beef broth
Assembly
4 slices of Gruyère or Swiss cheese
4 hamburger buns
1 clove garlic, finely chopped (optional for garlic butter)
Extra butter for buns
1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried thyme)
Instructions
Melt the butter in a big skillet over medium heat. Toss in your thinly sliced onions and add the sugar. Let them cook, giving them a stir now and then, until they turn deep golden and develop a sweet flavor, around 20-25 minutes. When they stick to the pan, just splash a bit of beef broth to loosen them up.
Grab a bowl and mix your ground beef with salt, pepper, and Worcestershire sauce. Form this mixture into 4 equal-sized patties.
Put your patties on a hot grill or in a skillet and cook them how you like them.
Want tasty buns? Mix chopped garlic with some soft butter and spread it on your buns. Toast them until they’re golden.
Take the bottom half of each bun and put a cooked patty on it. Add a big scoop of those sweet onions and top with your cheese slice.
Put your open-faced burgers under the broiler for a minute until the cheese gets all melty and bubbly.
Scatter some thyme on the melted cheese, pop the top bun on, and eat them while they’re hot.
Notes
Gruyère brings the most authentic flavor, but Swiss cheese works well too. Don’t rush the onions—they’re the heart of the recipe. You can also prepare the onions ahead of time and reheat them when assembling. These burgers pair beautifully with crispy fries or a fresh green salad.