Ingredients
Equipment
Method
- Caramelize onions in butter and olive oil with sugar over medium heat for 30–40 minutes.
- Sprinkle flour over onions and stir 1–2 minutes.
- Deglaze with white wine, simmer 3–4 minutes.
- Add beef broth, Worcestershire sauce, thyme, salt, and pepper. Simmer 20 minutes.
- Preheat oven to 375°F. Brush baguette slices with olive oil and toast 8–10 minutes.
- Ladle soup into oven-safe bowls. Place toasted bread on top and cover with shredded Swiss cheese.
- Broil 2–4 minutes until cheese is melted and bubbly. Serve hot immediately.
Nutrition
Notes
For best results, caramelize onions slowly for maximum flavor. Assemble soup just before serving for crisp bread.
