I created this recipe on a day I needed to use up some leftover fresh green beans and zucchini. Even our pickiest eaters - 11 and 13 year-old granddaughters - ate it and asked for more! Practically endless in its flexibility, you can make a lot of changes to this recipe according to what you have on hand. You can use green Zucchini or yellow summer squash. Green beans can be canned, frozen, or fresh. Bell peppers can be green, yellow, or red. Seasoning can be chili powder or Mrs. Dash. Only the butter beans are an absolute, as they add a unique flavor and just a tad of thickening to the broth.