Simmer chicken until tender in boiling salted water about 3 hours, or pressure cook. Cool quickly in broth. Remove meat from bones in large pieces; slice.
Cook broccoli in salted water until tender; place on heat-proof platter (or in shallow baking pan). Sprinkle with c. cheese. Arrange chicken slices on broccoli. Spoon Mock or Easy Hollandaise Sauce over top. Sp