Butter baking dish well in 9 x 13 inch dish. Put chicken breasts in dish, skin side up. Mix together:

1 can mushroom soup (undiluted)
1/2 pkg. dried onion soup (Liptons)
1 c. sour cream

Mix and pour over chicken. Top with 3 ounce can chop suey noodles. Bake 1 hour at 350 degrees. If breasts are large it may take 15 minutes longer.