Preheat your oven to 180° C (350° F), get out and grease a 7x11 baking pan with butter.
Cook frozen broccoli according to package instructions, drain. If using fresh, cook in boiling salted water until tender, drain.
Arrange the broccoli in the prepared baking pan, place chicken on top.
In a mixing bowl, add the soup, mayo, lemon juice, and curry powder. Stir to mix together.
Pour soup mixture over the chicken, sprinkle with Cheddar cheese.
In a small bowl, mix together breadcrumbs and melted butter, sprinkle on casserole.
Bake for 25-30 minutes or until heated through.
Serve with sides of your choice, enjoy.