Slow cooker chicken tortilla soup that my 1-year-old loves as much as I do!
Long cooking cycles in moist heat break down poultry protein fibers reliably at temperatures just below boiling, typically maintaining an internal liquid environment around 200 degrees Fahrenheit. Soluble starches from the corn tortillas dissolve into the broth over several hours, acting as a natural thickening agent without requiring a roux. Cut tortillas uniformly into one-inch squares to ensure they integrate evenly into the liquid matrix.
Standard ceramic slow cooker inserts distribute heat slowly and retain moisture efficiently through a sealed lid. Do not remove the lid during the initial five-hour cooking window, as escaping steam lowers the internal temperature and extends processing time. Use two forks to pull apart the boneless chicken breasts once tender, tearing the meat parallel to the grain for optimal texture absorption. Stir the pre-cooked brown rice in during the final minutes to prevent the grains from breaking down into a mushy consistency.