Ingredients
Equipment
Method
- Start by peeling and thinly slicing the onions.
- In a large pot or Dutch oven, heat the butter and olive oil over medium heat.
- Add the sliced onions and salt to the pot. Stir frequently and cook for about 20-25 minutes, until they are golden brown and caramelized.
- If using, pour in the white wine and scrape the bottom of the pot.
- Add the beef broth, black pepper, and thyme to the pot. Bring the mixture to a simmer.
- Let the soup simmer for about 10 minutes.
- While the soup simmers, preheat your broiler. Toast the bread slices until golden brown.
- Divide the soup into broiler-safe bowls, top with the toasted bread, and sprinkle generously with cheese. Place under the broiler until the cheese is bubbly and golden.
Notes
For extra flavor, try adding a splash of balsamic vinegar or a dash of Worcestershire sauce to the soup.
