From my mom's coworker Willo:
6 boneless/skinless chicken breasts
4 oz swiss cheese (we use a lot more)
1 can condensed cream of chicken soup
1 T melted butter
1/2 c seasoned croutons
Place chicken in greased baking dish with all sides touching. Layer Swiss cheese slices evenly over chicken. Coat with a layer of condensed soup. Optional to top with croutons and sprinkle with butter. Bake uncovered at 350 for approximately 45 minutes or until chicken is cooked.