Add onion and garlic, constantly stirring to prevent sticking. Add salt, cumin, chili powder, and oregano. Leave for 30 seconds or until fragrant.
Add the sweet potatoes, leave for about three minutes. Add the tomatoes, water, and beans.
Cover and simmer for 15-20 minutes.
Check for seasoning, adjust if necessary.
Serve with avocado pieces, chopped cilantro and tortilla chips, rice or quinoa.
Notes
To store this bean chili, cool it before transferring it to airtight containers and dividing it into individual servings. Chill in the refrigerator and label containers with the date.