In a slow cooker set on med. high mix:
1 cup sliced mushrooms.
1 can sliced mushrooms (with the juice)
1 can cream of mushroom soup

layer evenly on top of the mixture:
4 boneless, skinless chicken breasts
sprinkled with 1 tsp Mrs. Dash table blend and 1/2 tsp white pepper.

cook for 1 1/2-2 hours until tender and chicken falls apart when you fork it...
remove chicken and stir in:

1 cup sour cream
1- 1 1/2 cups finely shredded cheese.

replace the chicken in the slow cooker and turn to low until ready to serve...serve over white rice or noodles.