Bring a pan of salted water to the boil and tip in the pasta.
Cook according to the packet instructions until just tender.
Meanwhile, shred the mange tout or green beans diagonally and steam or boil for 2 minutes.
Drain and refresh under cold water, then set aside.
Heat the courgettes and tomatoes in a saucepan and cook gently for about 5 minutes.
Add the canned beans and mange tout or green beans and season to taste.
Stir gently and simmer over a very low heat for 2-3 minutes,then stir in the drained pasta and serve, sprinkled with mint.