4 to 6 boneless skinless chicken breast halves (4 ounces each)
2 tablespoons butter
1 can (10-3/4 ounces) condensed cream of mushroom soup, undiluted
1 cup sour cream or plain yogurt
1 can (4 ounces) sliced mushrooms, drained
Cooked rice or pasta
In a large heavy skillet, brown chicken in butter on both sides. Remove chicken; drain excess fat. Reduce heat to simmer. Stir in soup. Cook and stir to loosen browned bits from pan.
Add sour cream or yogurt, 1/2 cup at a time, stirring until well blended. Add chicken. Reduce heat; cover and simmer over very low heat until tender, about 45 minutes. Do not boil. Stir in mushrooms and heat through. Serve immediately over rice or pasta.