1. Heat oven to 350F degrees. 2. Place rice in a greased 3-quart casserole dish. 3. Add hot water; cover and let stand for 5 minutes. 4. Meanwhile, brown the meat in a large frying pan. 5. Add barbecue sauce, tomatoes, beans, and chili powder. 6. Mix well and then bring to a boil. 7. Spoon the meat mixture over the rice. 8. Sprinkle with Cheddar Cheese. 9. Cover and bake for 30 minutes. 10. Garnish with green onions.