In 9"x13" Pyrex, cover bottom of pan with bread squares. Layer bacon, cheese, mushrooms, onion, ham and parsley. Pour melted butter over all. Mix following and pour over layers: 3 c. milk 1/2 tsp. dill weed 1/2 tsp. dry mustard 1/2 tsp. Worcestershire sauce
Let stand in refrigerator overnight. Bake 1 1/2 hours at 300 degrees until set.