Creating Walkabout Onion Soup is straightforward if you follow these simple steps:

1. Cook the Onions: In a large pot, heat the olive oil and butter over medium heat. Add the sliced onions and cook slowly, stirring occasionally, until they are caramelized and golden brown, about 30-35 minutes.

2. Deglaze the Pot: Once the onions are caramelized, add the white wine (if using). Scrape the bottom of the pot to release any stuck-on bits and let it simmer for about 5 minutes.

3. Add Broth and Seasoning: Stir in the beef broth, fresh thyme, bay leaf, salt, and pepper. Bring the mixture to a gentle simmer and let it cook for an additional 10 minutes.

4. Prepare the Baguette: While the soup simmers, preheat your oven to 400°F (200°C). Place the baguette slices on a baking sheet and bake for 5-7 minutes, or until they are lightly toasted.

5. Melt the Cheese: Once the soup has simmered, remove the bay leaf. Ladle the soup into oven-safe bowls, placing one or two slices of toasted baguette on top of each bowl. Generously sprinkle the grated Gruyère cheese over the bread.

6. Broil: Place the bowls under the broiler for 3-5 minutes, or until the cheese is melted and bubbly. Keep an eye on them, as they can burn quickly!

7. Garnish: Remove the bowls from the oven and allow them to cool slightly. Garnish with fresh parsley, if desired.

Congratulations! You’ve now created a delicious bowl of Walkabout Onion Soup that everyone will love.