Ingredients:
Burger Patties:
1 lb ground beef
Salt and 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
1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried thyme)
For Assembly:
4 slices Gruyère or Swiss cheese
4 hamburger buns
1 clove garlic, minced (optional for garlic butter buns)
Additional butter for buns
Directions:
1 Caramelize the Onions: In a large skillet over medium heat, melt the butter. Add sliced onions and sugar, cooking and stirring occasionally until onions are deep brown and sweet (about 20-25 minutes). Deglaze the pan with beef broth if the onions start to stick.
2 Prepare the Burger Patties: Mix ground beef with salt, pepper, and Worcestershire sauce, then form into 4 patties.
3 Cook the Burgers: Grill or cook the patties in a separate skillet to desired doneness.
4 Garlic Butter Buns (Optional): Mix butter and minced garlic, spread on buns, and toast until golden brown.
5 Assemble the Burgers: Place each patty on a bun bottom. Top with caramelized onions, a slice of cheese, and broil until cheese melts and bubbles.
6 Sprinkle with fresh thyme, add the bun tops, and serve immediately. Enjoy the rich, savory flavor of French Onion Soup in burger form!
Prep Time: 15 mins | Cook Time: 30 mins | Total Time: 45 mins | Calories: 650 kcal per burger