Black Bean Soup

Ingredients

• 1 Tbs canola oil
• 1 medium onion, chopped
• 1 1/2 Tbs chili powder
• 1 1/2 tsp ground cumin
• 3 15-ounce cans black beans, rinsed
• 5 cups water
• 3/4 cup prepared salsa
• 1/4 tsp salt
• 1 1/2 Tbs lime juice
• 4 Tbs reduced-fat sour cream (optional)
• 2 Tbs chopped fresh cilantro (optional)