There are several ways to keep cooked pinto beans: - in the refrigerator: cooked beans can be kept in the refrigerator in an airtight container for about 3 to 5 days. - In the freezer: cooked beans can also be frozen in freezing bags or hermetic containers. They can be kept for about 6 months in the freezer. - Canned: cooked beans can be preserved using a sterilization process for long -term conservation.