4 boneless chicken breasts, flattened
4 slices ham
1/2 c. grated Swiss cheese
1/2 c. mayonnaise
1 tbsp. mustard

Place chicken in lightly greased baking pan, top with ham.

Mix together 1/4 cup cheese, mayonnaise and mustard. Spread on top of ham and sprinkle remaining cheese on top. Bake approximately 25 minutes.

Toast the bread. Place ham and chicken on toast and serve hot.