Easy Homemade French Onion Soup Recipe

Name: Easy Homemade French Onion Soup Recipe
Prep time: 15 min
Cook time: 1 h
Total time: 1 h 15 min
Cuisine: French
Ingredients: 4 large yellow onions ( thinly sliced); 3 tablespoons unsalted butter; 1 tablespoon olive oil; 1 teaspoon sugar; 1 teaspoon salt; ½ cup dry white wine (optional); 8 cups beef broth; 2 teaspoons Worcestershire sauce; 1 teaspoon dried thyme (or a few sprigs fresh); 1 bay leaf; Salt and black pepper (to taste); 1 baguette (sliced and toasted); 2 cups shredded Gruyère or Swiss cheese