How to Make It
In a large saucepan, heat the olive oil. Add the onion, celery and garlic and cook over moderately low heat, stirring occasionally, until softened, about 7 minutes.
Add the broccoli and water to the saucepan and bring to a boil. Simmer over moderate heat until the broccoli is tender, about 10 minutes.
Transfer the contents of the saucepan to a blender and puree until smooth. Season the soup with salt and pepper and serve with the Cheddar Crisps.