Vegetarian Potato-Kale Soup

Heat oil in a Dutch oven or large heavy pot over medium-high heat. Add onion; cook, stirring occasionally, under tender, about 5 minutes. Add garlic; cook, stirring constantly, until fragrant, about 30 seconds. Stir in broth, water, potatoes, parsnips, rosemary and salt; bring to a boil. Reduce heat to medium-low; cover and cook, stirring occasionally, until the vegetables are tender, about 15 minutes. Using the back of a spoon, gently mash the vegetables to slightly thicken the soup.

Stir in kale, Parmesan and cream; cook over medium-low heat, stirring occasionally, until the kale is wilted, about 10 minutes more. Stir in lemon juice just before serving. Garnish with additional rosemary and Parmesan, if desired.