Again I just chuck stuff in this.
Tinned beans ie: kidney, canelini, chick peas any but not baked beans
Carrots
potatoes
onions
cabbage
tinned tomatoes
pasta or rice
You can out any veg you want really. I also use leeks and courgettes.
Put the veg and the beans in a pan add stock or water and tinned tomatoes.
When the veg is cooked add some rice or pasta and then check seasoning.
A big pot of soup and its all free on green