Grease the interior of the slow cooker crock with nonstick cooking spray.Combine the sweet potatoes and next 10 ingredients (through broth) in the prepared crock and mix well.Cover. Cook on Low 3 to 4 1/2 hours, or until the sweet potatoes, lentils, and onions are tender.Add the chopped spinach leaves, peanut butter, and lime juice. Stir well. Cook just until heated through.Serve in bowls. Top with chopped peanuts.Excerpted from Stock the Crock by Phyllis Good. Copyright © 2017 Oxmoor House.