Freshly grated Parmesan or pecorino cheese, for serving (optional)
Instructions
Heat the olive oil in a large pot or Dutch oven over medium heat. Add the leeks, kale stems, 1 teaspoon of the salt, and several grinds of pepper and cook, stirring occasionally, for 5 to 8 minutes, or until softened. Add the garlic and rosemary and cook, stirring, for 1 minute.
Add the carrots, potatoes, squash, parsley stem bundle, broth, water, apple cider vinegar, and the remaining ½ teaspoon salt. Cover and simmer, stirring occasionally, for 30 to 35 minutes, or until the potatoes and carrots are tender.
Uncover and remove the parsley stem bundle. Stir in the kale leaves, cover, and simmer for 5 minutes. Season to taste and serve topped with parsley and Parmesan, if desired.