Preheat the oven to 180°C. Wash the cauliflower and cut into smaller pieces. Spread on a baking sheet. Drizzle with olive oil, salt, add black pepper and bake until golden brown, at least 15 minutes.
Finely chop the white part of the onion. Add the oil and 1 tablespoon of butter to the saucepan and briefly sauté the onion. Add 1 tablespoon flour. Pour in the broth and cook.
Take out the roasted cauliflower from the oven. Put the small pieces aside for later.
Add the remaining cauliflower to the soup and cook. Season with salt, black pepper and nutmeg. Add a bay leaves.
Cut the bread into small cubes, place on a baking tray lined with baking paper and bake in a preheated oven at 150 °C until golden brown.
Puree the soup.
Finely chop the green part of the onion and the parsley.
Fry small pieces of cauliflower in butter and add parsley.
Serve with croutons, roasted cauliflower and spring onions.
Enjoy the meal!