Chickpeas and Sweet Potatoes

Chickpeas and Sweet Potatoes
Recipe adapted from Vegan Fire and Spice by Robin Robertson © 2008, Vegan Heritage Press. For a variation, add a teaspoon or two of curry powder. And Vegan Planet

2 sweet potatoes, diced
1 tablespoon cold-pressed canola oil
1 yellow onion, chopped
1/4 teaspoon turmeric
1/4 teaspoon ground cumin
1/4 teaspoon ground cinnamon
1/4 teaspoon cayenne
1/2 cup water or vegetable broth, or more as needed
1 (15.5-ounce) can chickpeas, drained and rinsed
1 (14.5-ounce) can diced tomatoes, undrained
Salt and freshly ground black pepper
3 cups baby kale, lightly steamed

Steam the sweet potatoes until just tender, about 20 minutes.
In a large saucepan, heat the oil over medium heat. Add the onion, turmeric, cumin, cinnamon, and cayenne. Cover and cook for 5 minutes, stirring occasionally.
Stir in the water, reserved sweet potatoes, chickpeas, tomatoes, and salt and pepper to taste. Cover and simmer until the mixture thickens and the flavors are blended, about 15 minutes.
To thicken the liquid, blend about 1 cup of the mixture in a blender or food processor until smooth, then stir it back into the saucepan. Taste and adjust the seasonings. Stir in the kale and serve over rice.