Ingredients
1 onion, finely chopped
2 carrots, chopped
1 large celery stick (including leaves), chopped
2 large tomatoes, chopped
large handful of mixed beans/peas (french, runner, pencil podded)
2 tablespoons tomato puree
1 pint water
1 veg stock cube/pod
1 handful of broken spaghetti
salt and pepper
Optional
either fresh basil leaves or fresh red chilli 

Method
Put all the ingredients into a pan, bring to the boil and simmer until tender. If you want the soup to be a little thicker, then continue cooking until slightly reduced.

Tip
You can also add some finely shredded green cabbage to the pot 5 minutes before serving.