In a pot, combine chicken broth, green beans, cannellini or white kidney beans, tomatoes, onions, celery & tomato paste. Bring to a boil. Reduce heat; cover and simmer for 20 minutes.
Thaw K&N's Skinless Chicken Frankfurter as per instructions on label.
In a large skillet, brown the Frankfurters in oil over medium heat. Add a small amount of hot water. Cover and cook until the Frankfurters change color; and drain. Cut into ¼-inch slices and add to soup. Simmer uncovered for 15 minutes.
Add spinach and simmer uncovered for 5 more minutes, or until spinach is wilted.
Garnish with dried oregano, white pepper and/or parmesan cheese if desired.