Sweet Potato, Black Bean, and Quinoa Chili

• 2 tablespoons olive oil
• 1/2 medium-sized yellow onion chopped
• 1 large sweet potato or yam chopped into ½” cubes (about 4 cups worth)
• 4 cloves garlic minced
• ½ cup dry quinoa
• 1 (15-oz) can black beans or 1 cup dry black beans, soaked
• 4 cups low-sodium vegetable broth
• 1 (15-oz) can diced tomatoes
• 2 chipotle chilis in adobo sauce chopped, optional
• 1.5 Tbsp chili powder
• 1 tsp ground cumin
• 2 tsp paprika
• 1 tsp sea salt to taste

For Serving:

• sour cream or plain yogurt
• cheese
• cilantro
• green onion
• avocado