Crispy Ranch Chicken

1 can cream of chicken soup
1/2 c. milk
1 oz. package ranch dressing mix
4 chicken breasts
1 1/2 c. finely crushed tortilla chips
2 T. margarine or butter

In a shallow dish mix soup, milk and dressing mix. Reserve 1 c. for sauce. Dip chicken into soup mixture and coat with tortilla chips. Place chicken on a greased baking sheet and drizzle with margarine. Bake at 400 degrees for 20 minutes or until chicken is no longer pink. Heat reserved sauce over meduim heat and serve with chicken.