Boil chicken, skin and debone it. Cook frozen broccoli (maybe in microwave).
While chicken and broccoli are cooking slice up bunch of fresh mushrooms. Place chicken in 13" x 9" pan, then mushrooms, then broccoli.
In a separate bowl mix mayonaise, soup and lemon juice together. Pour this mixture over the chicken, mushrooms and broccoli.
Pour grated cheddar cheese over all of this stuff. Melt butter in the micro and add bread crumbs to it. Place the butter crumb stuff on top of the cheddar cheese.
Bake at 350oF for 30 minutes or until bubbly.
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