Sauté aromatics: Heat olive oil in a soup pot over medium heat. When oil shimmers, add in sliced leeks. Add a generous pinch of salt and sauté 2-3 minutes, or until leeks have softened. Then add in celery, parsnips, and garlic and sauté for another 2-3 minutes.
Add broth, veggies and more: Pour in vegetable broth and add in dried oregano, thyme, and bay leaves. Bring the mixture up to a boil, then add in green beans, rinsed white beans, dry pasta, kale, and frozen peas.
Simmer soup: After adding ingredients, reduce heat as needed (to low or medium-low) to establish a rapid simmer. Simmer for about 15 minutes, or until pasta is al dente. (Start checking pasta for doneness at around 10 minutes.) Make sure to stir occasionally to keep pasta from sticking together.Note: If you prefer your green beans to stay slightly crisp, add them in a few minutes later than the other ingredients. Add the miso paste: Remove a ladleful of broth from the soup into a small bowl. Add in the miso paste and whisk it into the broth to break up lumps. Stir this into the soup.
Finishing touches: Stir in fresh lemon juice. Taste and adjust salt and pepper to preference. Serve garnished with fresh basil or dill. We also love to top ours with grated vegan parm (from Violife or Follow Your Heart).