In large saucepan, heat oil over medium heat. Add sausage, onions, garlic and Cajun seasoning, sauté until sausage is browned (about 3-4 minutes).
Add broth, beans, tomatoes, water, rice and greens; bring to a boil, stirring frequently. Reduce heat; simmer until rice is cooked (about 10 minutes), stirring occasionally.
Stir in half & half; heat through.