Put beans in food processor or blender; process using on/off pulse until beans are well mashed. Scrape down sides as necessary. Reserve. Heat oil in a Dutch oven. Add carrots, onions, celery and garlic; sauté for 5 minutes on medium heat. Add remaining ingredients, except pasta, and bring to a boil. Reduce heat to a simmer and cook, stirring occasionally, for 20 minutes. While soup is simmering, cook pasta according to package directions. Add pasta to finished soup and serve immediately. Makes 4 to 6 servings. Variations: Add chopped cooked bacon and chopped zucchini when sautéing vegetables.