I have been very lazy and used soup packs from Waitrose, as I haven't been well and it is just too much effort to stand and chop. I have used one which has finely chopped butternut squash, onion and a little chilli, and it made a lovely soup - I added a chopped potato to make it a bit thicker. I also have a celery, onion and carrot mix called soffrito, to which I am going to add some celeriac.
Remember to cut things up small.
