Whisking the miso into the reserved cooking water makes it easier to incorporate into the pasta.
For a slightly different spin, substitute yellow squash for the zucchini and a poblano for the bell pepper.
If you use a sturdier green, add it to the pan during the last 5 minutes of cooking time.
Dried oregano works as a substitute for fresh, but reduce the quantity by half. Serve alongside a side salad and crusty bread.
For a thicker soup, mash 1/2 cup of the beans and stir into the soup right before adding the cream.
Buy cauliflower florets in a bag instead of the whole head and look for containers of pomegranate arils to keep prep simple.
For a more filling meal, serve with a whole grain like brown rice, or over rice noodles.