In a meduim pot brown the beef,drain off fat, add in the onion. Then add in the beans, mix well to coat. Then add in the diced tomatoes, and tomatoes sauce. Bring to a light boil over meduim heat. Let cook for about 15 to 20 mins. Maybe be served plan, over a fresh pot of cooked rice, or add the chips, cheese, and hot sauce for the nahco flair.