Slow Cooker Chicken Enchilada Soup

Name: Slow Cooker Chicken Enchilada Soup
Ingredients: 2-3 boneless skinless chicken breasts equal to 1 pound; 1 medium onion diced; 4 cloves garlic minced; 1 1/2 cups enchilada sauce; 1 15 ounce can chicken stock; 1 15 ounce can black beans, drained and rinsed; 1 15 ounce can corn, drained; 1 14 ounce can fire-roasted diced tomatoes, with juice; 1 4 ounce can diced green chiles; 1 teaspoon ground cumin; 1 teaspoon chili powder; 1/2 tablespoon chili in adobo sauce only (can add more if you like extra heat); 1/4 teaspoon graham masala; optional garnishes: tortilla chips cilantro avocado, sour cream, shredded cheese