1. Bring a large pan of slightly salted water to the boil and cook the fusilli according to packet instructions. Meanwhile, blend the chickpeas and the water from the can with the rest of the ingredients until smooth to make the pesto sauce.
2. Once cooked, drain the pasta and transfer to a large bowl. Add the pesto and mix well together. Serve immediately with a sprinkling of extra grated parmesan, if you like. Season to taste.