Ingredients
Equipment
Method
Directions
- In a large skillet, melt the unsalted butter with olive oil over medium heat. Add sliced yellow onions and sauté for 12-15 minutes until caramelized.
- In a saucepan, combine beef broth, Worcestershire sauce, soy sauce, minced garlic, and thyme. Simmer for 5 minutes and season with salt and pepper.
- Layer one slice of French bread with Swiss cheese, followed by roast beef and caramelized onions. Top with another slice of Swiss cheese.
- Spread softened butter on the outer sides of each sandwich.
- Grill the sandwiches on medium heat for 3-4 minutes on each side until golden brown and the cheese is melted.
- Slice sandwiches diagonally and serve with warm au jus for dipping.
Nutrition
Notes
Adjust seasonings and reheating methods based on personal preferences for leftovers.
