Preheat oven to 400.
Gently steam 2 boxes frozen chopped broccoli just until it starts to get tender.
Drain the broccoli into an oven-proof glass dish.
Add and mix well:
- 1 can condensed cream of chicken soup
- 1/2 C. mayonnaise
- 1 egg
- salt and pepper
Melt 2 sticks butter.
Coat 2 C. bread crumbs with the butter, tossing gently with a fork.
Sprinkle 2 C. shredded cheddar cheese over the broccoli mixture.
Sprinkle the coated bread crumbs over the cheese, covering the cheese completely so it does not burn in the oven.
Bake for 1 hr. or until the filling is crumbly, not liquid.
Serve warm.