
Creato con AI
Peel and thinly slice the onions.
In a large pot, heat the olive oil and butter over medium heat.
Add the sliced onions and cook, stirring occasionally, until they are caramelized and golden brown, about 25-30 minutes.
Season the onions with salt, black pepper, and thyme.
Add the bay leaf, vegetable broth, and white wine to the pot.
Bring the mixture to a boil, then reduce the heat and let it simmer for about 20 minutes.
Preheat your oven's broiler.
Ladle the soup into oven-safe bowls and place a slice of baguette on top of each.
Sprinkle the grated Gruyere cheese over the baguette slices.
Place the bowls under the broiler until the cheese is melted and bubbly, about 3-5 minutes.
Carefully remove the bowls from the oven and serve hot.