Rinse and drain the beans. Place them in a large saucepan and cover them with water.
Bring the beans to a boil over high heat. Remove from heat and cover. Let stand 1 hour.
Combine the sausage, chicken broth, onion, green pepper, jalapeno, garlic, tomato paste, salt, pepper, and oregano in the slow cooker.
Drain the beans and add them to the slow cooker.
Cook on low heat for 6-8 hours or until the beans and tender.
Serve over top of cooked rice.
Top with green onions and cheddar cheese if desired.