Moroccan Vegetable Stew

Name: Moroccan Vegetable Stew
Ingredients: 1 medium onion, chopped; 1 tablespoon olive oil; 1 small butternut squash, chopped (about 1 1/2 cups worth); 1 medium potato, peeled and chopped; 3/4 cup chopped carrots; 1/2 cup chopped celery; 3 plum tomatoes, chopped; 1 can garbanzo beans; 2 teaspoons cinnamon; 1 teaspoon cumin; 1 teaspoon smoked paprika; 1/2 teaspoon ground coriander; Pinch of cayenne pepper; 1 1/2 cups vegetable broth; 2 cups water; Salt and pepper to taste; Coconut milk to taste