Place onion, carrot, parsnip and celery in the bowl of a food processor fitted with a metal blade. Pulse the vegetables until finely chopped. Reserve processor for later use.
Heat oil in a large saucepan set over medium-high heat. Add vegetable mixture, turkey, salt, pepper, cumin and oregano. Cook, stirring often,for 7 min. or until turkey is browned and vegetables are softened.
Meanwhile, pulse 1 cup (250 mL) of the beans with 1 cup (250 mL) of chicken broth in the food processor until smooth. Add puréed beans, remaining broth, remaining beans and corn to the pan and bring to a boil. Simmer for 7 min. or until slightly thickened. Stir in cilantro and garnish with a dollop of sour cream and few pieces of jalapeño just before serving.