Clean and wash the broccoli and cut it into florets. Peel the stalk and cut a little smaller. Peel and chop the onion. Heat 1 tablespoon of oil in a large pot. Sauté onion and broccoli in it. 3⁄4 Pour in l water, bring to the boil and stir in broth.
Cover and simmer for 5-7 minutes.
Wash the basil, shake dry, pluck the leaves. Toast bread in the toaster until golden brown, then dice. Puree the soup. Stir in the bresso and season the soup with salt and pepper. Serve with basil and croutons.