Chicken Breasts In Sour Cream
["6 chicken breasts, skinned", "4 Tbsp. melted butter or margarine", "1/2 c. chopped onion", "1/2 c. chopped celery", "1 green pepper, chopped", "1 (4 oz.) can sliced mushrooms (undrained)", "1 c. commercial sour cream", "1/2 tsp. salt", "1/4 tsp. pepper"]
["Saute chicken in butter.", "Arrange chicken in a lightly greased 13 x 9 x 2-inch pan; set aside.", "Saute onion, celery and green pepper in pan drippings until tender.", "Remove from heat; let cool slightly.", "Combine vegetables, mushrooms, sour cream, salt and pepper.", "Spoon mixture over chicken.", "Cover and bake at 350\u00b0 for 45 to 55 minutes, or until chicken tests done.", "Yields 6 servings."]
["chicken breasts", "butter", "onion", "celery", "green pepper", "mushrooms", "sour cream", "salt", "pepper"]