1 ⁄ 2 yellow onion, finely chopped
1 rib celery with leaves, finely chopped
1 carrot, finely chopped
1 bay leaf
2 tablespoons extra virgin olive oil, plus additional for drizzling
2 plum tomatoes, diced
1 sprig rosemary
4 cups reduced-sodium chicken broth
1 can (15.5 ounces) cannellini beans, or kidney beans, rinsed and drained
Kosher salt and freshly ground black pepper
1 cup ditalini, elbows, or tripolini pasta
Grated parmigiano-reggiano cheese