A complete protein (or whole protein) is a source of protein that contains an adequate proportion of all nine of the essential amino acids necessary for the dietary needs of humans or other animals. While beans alone or grain alone do not form a complete protein, their combination form a complete protein - ideal for vegetarians and those trying to lessen their meat intake, or those whose budget cannot afford the cost of meat. Beans are a near perfect health food, low in fat and cholesterol and high in fiber, iron and folic acid.
Dietary fiber is probably best known for its ability to prevent or relieve constipation. But foods containing fiber can provide other health benefits as well, such as helping to maintain a healthy weight and lowering your risk of diabetes and heart disease. Soluble fiber may help lower total blood cholesterol levels by lowering low-density lipoprotein, or "bad," cholesterol levels. Studies also have shown that high-fiber foods may have other heart-health benefits, such as reducing blood pressure and inflammation. High-fiber foods tend to be more filling than low-fiber foods, so you're likely to eat less and stay satisfied longer. One bowl of Bob’s Rice and Bean soup will leave you sated for many hours.
These soup recipes will be equally delicious should you exclude the meat. Vegetarians seeking to maintain their protein intake will find this complete protein satisfies that need. When in doubt, add more vegetables.