French Onion Soup Burgers
Juicy beef burgers topped with rich caramelized onions and melted Gruyère cheese—all the flavors of classic French onion soup in burger form.
Prep Time
15 minutes
Cook Time
30 minutes
Total Time
45 minutes
Servings
4 burgers
Ingredients
Burger Patties
- 1 lb ground beef
- Salt and black pepper, to taste
- 2 tablespoons Worcestershire sauce
Caramelized Onions
- 2 large onions, thinly sliced
- 2 tablespoons butter
- 1 teaspoon sugar
- 1/2 cup beef broth
Assembly
- 4 slices Gruyère or Swiss cheese
- 4 hamburger buns
- 1 clove garlic, finely minced (optional, for garlic butter)
- Extra butter for buns
- 1 teaspoon fresh thyme leaves
(or 1/2 teaspoon dried thyme)
Instructions
1. Caramelize the Onions
Melt the butter in a large skillet over medium heat.
Add the sliced onions and sprinkle with sugar.
Cook, stirring occasionally, for 20–25 minutes until the onions are deeply golden and caramelized.
If they start sticking, add a splash of beef broth to deglaze the pan. Continue until soft and jam-like. Set aside.
2. Prepare the Burger Patties
In a bowl, combine the ground beef with salt, pepper, and Worcestershire sauce.
Gently mix and shape into 4 equal patties.
3. Cook the Burgers
Heat a grill or skillet over medium-high heat.
Cook patties for about 3–5 minutes per side, or until done to your preference.
4. Toast the Buns
Mix softened butter with minced garlic (optional).
Spread on the cut sides of the buns and toast in a skillet or oven until golden.
5. Assemble the Burgers
Place each cooked patty on the bottom half of a bun.
Top generously with caramelized onions and a slice of Gruyère or Swiss cheese.
6. Melt the Cheese
Place the open-faced burgers under the broiler for 1–2 minutes, until the cheese is melted and bubbly.
7. Finish & Serve
Sprinkle fresh thyme over the melted cheese.
Add the top bun and serve immediately while hot.
Serving Suggestions
Serve with:
- Crispy fries
- Onion rings
- Simple green salad
