Follow these simple steps to create your Savory French Onion Soup:

1. Slice Onions: Thinly slice the onions into half-moons.
2. Melt Butter and Oil: In a large pot, heat the butter and olive oil over medium heat.
3. Caramelize Onions: Add the sliced onions and sugar to the pot. Cook for about 25-30 minutes, stirring occasionally, until they are golden brown and caramelized.
4. Add Wine: Pour in the white wine and deglaze the pot, scraping up any bits stuck to the bottom.
5. Add Broth: Stir in the beef broth and Worcestershire sauce. Season with salt and pepper to taste.
6. Simmer: Bring the soup to a gentle boil, then reduce heat to low and let it simmer for about 30 minutes.
7. Prepare Bread: While the soup simmers, preheat your oven to 400°F (200°C). Toast the baguette slices until golden and crisp, about 5-7 minutes.
8. Cheese Melt: Ladle the hot soup into oven-safe bowls. Place a slice of toasted baguette on top of each bowl, then generously sprinkle with Gruyère cheese.
9. Broil: Place the bowls under the broiler for about 2-3 minutes, or until the cheese is bubbly and golden.
10. Garnish and Serve: Remove from the oven, garnish with fresh thyme and parsley if desired, and serve immediately.

Completing these steps will result in a batch of Savory French Onion Soup that is hearty and deeply satisfying.