Moroccan Chickpea Stew

Here's another yummy soup Mom made for us. Don't forget the lemon. It's essential!

1 large onion, finely chopped
2 tablespoons olive oil
1 tablespoon butter
2 garlic cloves, minced
2 teaspoons ground cumin
1 cinnamon stick
4 cups vegetable broth
2 cups cubed butternut squash (we used sweet potatoes)
1-15 oz. can garbanzo beans (kidneys were good too)
1 can (14-1/2) diced tomatoes, undrained
1 medium red potato, cut into 1-inch cubes
1 medium sweet potato, peeled and into 1-inch cubes
1 medium lemon, thinly sliced
1/4 teaspoon salt
2 small zucchini, cubed
3 tablespoons minced fresh cilantro

In a Dutch oven, saute onion in oil and butter until tender. Add the garlic, cumin, cinnamon stick and chili powder; saute 2 minutes longer. Stir in the broth, squash, chickpeas, tomatoes, potatoes, lemon and salt. Bring to a boil. Reduce heat; cover and simmer for 15-20 minutes or until potatoes and squash are almost tender. Add zucchini; return to a boil. Reduce heat; cover and simmer for 5-8 minutes or until vegetables are tender. Discard cinnamon stick and lemon slices. Stir in cilantro.