1.Cook pasta in large saucepan of boiling water until tender; drain.
2.Meanwhile, heat oil in large saucepan; cook onion and pancetta, stirring, until onion softens. Add undrained tomatoes; cook, stirring, for 2 minutes. Stir in pasta until heated through. Top with cheese and parsley.
Bucatini is a long, hollow pasta; it looks a bit like thick spaghetti, but has a tube running down the centre. It goes well with chunkier-style sauces.Note