Kosher salt and freshly ground black pepper, to taste
Pesto, for serving
PREPARATION
Heat olive oil in a large heavy-bottomed pot on medium-high. Add onion, leeks, celery, and bell pepper and cook until softened, about 8 minutes, lowering the heat if needed to prevent burning.
Add garlic and cook until fragrant, about 1 minute.
Stir in stock, bay leaf, and thyme. Bring to a simmer, then stir in zucchini, green beans, tomatoes, white beans, and pasta.
Bring to a simmer again and let cook until vegetables and pasta are tender, about 10 minutes.
Add more stock if desired, stir in basil, and season with salt and pepper.