French Onion Soup

Ingredients:

• 4 large onions, thinly sliced
• 4 tablespoons unsalted butter
• 2 tablespoons olive oil
• 2 cloves garlic, minced
• 1 teaspoon granulated sugar
• 1/2 cup dry white wine (optional)
• 6 cups beef broth
• 1 teaspoon Worcestershire sauce
• Salt and pepper to taste
• Baguette slices, toasted
• Gruyère cheese, grated
• Fresh thyme or parsley for garnish (optional)