Chicken Tetrazzini - cooking recipe

Ingredients

1 (7 oz.) pkg. thin spaghetti
1 (6 oz.) jar sliced mushrooms, drained
1 large onion, diced
1/2 c. butter or margarine
2 c. sour cream
4 chicken breasts, cooked, skinned and deboned
2 (10 oz.) cans cream of chicken soup, undiluted
1/2 c. Parmesan cheese, grated

Preparation

Break spaghetti into
1-inch pieces and cook in boiling salted water until
tender;
drain.
Saute mushrooms and onion in butter or margarine.
Cut chicken into 1 to 2-inch pieces.