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Ingredients
Method
- Peel and finely chop the white onions.
- Sauté the onions in a little olive oil until browned, then add the chopped garlic and sage leaves.
- Season with salt, pepper, and a pinch of sugar. Deglaze with the balsamic vinegar.
- Add the chicken stock and simmer gently for 1½ hours.
- When cooked, pour the soup into individual ovenproof bowls (e.g., lion’s bowls).
- Place the toasted bread slices on top of the soup, sprinkle generously with Grana Padano cheese, and gratinate under the oven grill for 10–12 minutes, until golden.
- Sprinkle with chopped parsley before serving.
