Slow Cooker Chicken Enchilada Soup

Ingredients (20)

• For the soup:
• 2 teaspoons extra virgin olive oil
• 1/2 cup chopped onion
• 3 garlic cloves , minced
• 3 cups low-sodium chicken broth
• 1 8-ounce can tomato sauce
• 1 to 2 teaspoons chipotle chile in adobo sauce , chopped
• 1/4 cup chopped fresh cilantro
• 1 15-ounce can low-sodium black beans, rinsed and drained
• 1 14.5-ounce can petite diced tomatoes
• 2 cups frozen corn kernels
• 1 teaspoon ground cumin , plus more to taste
• 1/2 teaspoon dried oregano
• 1 pound boneless , skinless chicken breast
• Toppings:
• 3/4 cup shredded reduced-fat cheddar cheese
• 1/4 cup chopped scallions
• 1/4 cup chopped fresh cilantro
• 1 medium , 4-ounces avocado (optional)
• 6 tablespoons reduced-fat sour cream , optional