PREP: 20 minutes COOK: 4 to 6 hours (low) or 2 to 21⁄2 hours (high) STAND: 5 minutes MAKES 8 servings 2 19-ounce cans cannellini beans (white kidney beans), rinsed and drained 1 19-ounce can garbanzo beans (chickpeas) or fava beans, rinsed and drained 1⁄2 cup chopped...
