Salsa and Sour Cream Chicken—Crock Pot

4 boneless, skinless chicken breasts
1 envelope taco seasoning mix
1 cup salsa
2 Tbsp cornstarch
¼ cup sour cream

Spray crock pot with cooking spray. Put chicken in crock pot. Sprinkle taco seasoning on top of chicken. Cover with salsa. Cook on low for 8 hours. Remove chicken from crock pot. Mix cornstarch with a little water, then add to sauce. Stir in sour cream, and serve on top of chicken.