Separate broccoli into stem and florets and wash them under running water, then chop them in small pieces. In a pan under a medium heat boil the broccoli in salted water until become very soft. In the meantime in a sauce pan do the "soffritto": some extra virgin oil of olive and a clove of garlic, then sautè the boiled broccoli there, adding a piece of hot pepper.
Cook the caserecce (or the spaghetti if preferred) in the water of the broccoli until "al dente", then drain them and put in serving plates with the broccoli sauce. Add some grated parmesan and voilà... this delicious pasta is ready. Enjoy!