Prepare spice paste by combining ingredients in a blender or food processor and process until the mixture forms a paste.
Combine sweet potatoes, chickpeas, broth, tomato sauce, okra and spice paste in a large saucepan. Bring to a boil over high heat. Reduce heat to low, cover and simmer for 15 minutes. Uncover and simmer for 10 minutes or until vegetables are tender.
Serve stew over couscous with hot-pepper sauce.
Adapted from 101 Best Vegan Foods