This Tuscan-inspired white bean soup is made with a base of vegetables, fresh rosemary, broth or water, and naturally starchy cannellini beans that break down to a creamy consistency as they cook, no cream required. Serve garnished with cubes of crisp pancetta for an extra-meaty flavor, along with plenty of freshly grated Parmesan cheese.
Pour 3 tablespoons extra virgin olive oil into a Dutch oven or large soup pot (4-6 quarts). Place over medium heat and stir in ½ cup chopped onion, ½ cup chopped carrot, and ½ cup chopped celery. Cook until the vegetables are slightly softened, 3-5 minutes.
Stir in 1 tablespoon chopped garlic, 2 teaspoons chopped fresh rosemary, and ½ teaspoon crushed red pepperCook until fragrant, about 1 minute.
Add 2 15-ounce cans cannellini beans, 1 Parmesan rind, 2½ cups of the broth and 1½ teaspoons kosher salt. Bring to a simmer over medium-high heat, then adjust the heat to medium-low and partially cover the pot. Simmer the soup 15-20 minutes.
While the soup is cooking, place 4 ounces cubed pancetta in a small skillet and place over medium heat. Cook until the fat has rendered and the pancetta is crisp, stirring frequently. Using a spatula or slotted spoon, remove the pancetta to a plate lined with a paper towel.
To thicken the texture, ladle out one cup of soup and puree in a blender or food processor, then stir it back into the pot. Alternatively, use an immersion blender, pulsing for about 15 seconds to puree a small amount of the soup right in the pot.
Add 4 cups shredded kale and ¼ cup freshly grated Parmesan cheese to the soup and heat 1-2 minutes, just until the kale turns bright green and wilts. At this point, you can add some of the remaining broth to thin the texture of the soup to your preference.
Serve the soup in bowls, garnished with the pancetta and additional cheese to taste.
Notes
Great Northern or navy beans may be substituted, but the texture of the soup won't be as creamy.
The soup thickens considerably as it sits. Thin it back with a splash of broth or water when reheating.
The soup keeps refrigerated for 3-5 days and frozen for 1 month.