Sweet Potato Soup and Kale Chips

In a 3 1/2- or 4-quart slow cooker combine sweet potatoes, garbanzo beans, carrots, leek, garlic, chile peppers, and ginger. Stir in broth. Cover and cook on low-heat setting for 6 to 8 hours or on high-heat setting for 3 to 4 hours. Cool mixture slightly.

Transfer mixture, half at a time, to a blender or food processor. Cover and blend or process until smooth. Return all of the blended mixture to the slow cooker. Serve with Kale Chips and sour cream.