75g/2¾oz dried pasta, preferably penne or macaroni
20²µ/¾´Ç³ú plain flour
salt and ground black pepper
20²µ/¾´Ç³ú butter
50²µ/1¾´Ç³ú cheddar (preferably mature), finely grated
300ml/10fl oz milk
crusty bread, to serve (optional)