Add the pasta to a large pan of salted boiling water and cook according to the packet instructions. When you drain it, reserve a couple of ladlefuls of the cooking water.
Meanwhile, heat the oil in a large frying pan. Add the beans, garlic, lemon zest and juice and gently warm for 1 minute (keep an eye on the garlic so it doesn’t burn). Remove from the heat.
Add the pasta to the