Crockpot Chicken Tortilla Soup

2 Combine all soup ingredients in the slow cooker. Cook on high for 4 hours or low for 6-8 hours.
5 After the soup is finished cooking, remove the chicken and transfer it to a large bowl. Shred the chicken with two forks or with the paddle attachment of a stand mixer. Place the shredded chicken back into the soup. Taste soup for seasoning and add additional salt, if desired.
6 Cut the tortillas into thin strips and heat the butter in a small pan over medium-high heat. Once the butter is bubbling, add the tortilla strips. Cook 3-5 minutes, stirring frequently, until crisp.
7 Spoon soup into bowls and top with tortilla strips and other desired garnishes.