Add the beans and onions and half package cheese together. Next, add at least 2 cups salsa. Mix completely in the stoneware insert of crock pot. Set crock pot on 4 hours high, or low overnight. Stir a time or two. An hour before serving, add the rest of the cheese on top with chopped green onions, and sliced olives. After removing to serve, I then add chopped tomatoes and sour cream, if desired. For less fat, use low fat beans, sour cream, and cheese -- . I prefer Old El Paso beans. If you want more spice, add chopped chilies or jalepeno slices -- . This is for a large crock pot -- .