ADVERTISEMENT
1 1/2 pounds ground beef
Salt and pepper to taste
1 tablespoon Worcestershire sauce
4 slices Gruyere cheese
4 brioche buns
Mayonnaise (optional)
Fresh thyme for garnish
Instructions
1. Caramelize the Onions:
In a large skillet, heat the butter and olive oil over medium heat.
Add the sliced onions and sugar, stirring to coat the onions evenly.
Cook the onions for about 25-30 minutes, stirring occasionally until they are soft and deeply caramelized.
Season with salt and pepper, then add the beef broth, white wine, and thyme.
Simmer for an additional 5 minutes until the liquid is mostly absorbed and the onions are rich and flavorful. Set aside.
2. Prepare the Burgers:
In a mixing bowl, combine the ground beef with salt, pepper, and Worcestershire sauce.
Form the mixture into four equal patties.
Heat a grill or skillet over medium-high heat and cook the patties for about 4-5 minutes per side or until they reach your desired doneness.
During the last minute of cooking, place a slice of Gruyere cheese on each patty to melt.
3. Assemble the Burgers:
continued on the next page
ADVERTISEMENT
