Summer is the season of tomatoes, zucchini, corn and green beans, so why not add them all together and make a delicious and simple summer succotash? I started making this last summer when I had an abundance of tomatoes and zucchini in my farm box, along with green beans and basil in my garden. It's the perfect companion for grilled salmon or chicken or whatever you fancy. I started making it again a few weeks ago and it's too good not to share!