Cover and cook on low for 6-8 hours or on high for 3-4 hours. Make sure chicken reaches an internal temperature of at least 165ºF. When the chicken is done, remove from the slow cooker (keep the liquid on the pot) and place in a large mixing bowl. Using 2 forks, shred the meat. Toss with remaining KC Masterpiece® sauce until evenly coated.
Whisk cornstarch into the remaining liquid in the slow cooker. Add cream cheese and cheddar cheese and continue to whisk until melted and smooth. Stir in uncooked pasta noodles and top with chicken. Cover and cook for 30-60 minutes until pasta is cooked, stirring occasionally (add additional water as necessary).
Plate and garnish with cilantro. Serve immediately.