PREP: 20 minutes COOK: 8 to 10 hours (low) or 4 to 5 hours (high) MAKES 4 to 6 servings 1 pound sweet potatoes (2 to 3 medium), peeled and coarsely chopped 1 cup brown or yellow lentils, rinsed and drained 1⁄2 cup chopped onion (1 medium) 1 medium fresh jalapeño chile...
