Pullman bread, remove the crust from 8 slices of bread, line bottom of the 9 x 13 inch pan with bread. Layer ham and cheese on the bread. Put a layer of cut green onions on ham and cheese, then put another layer of ham and cheese on that. Then make the top layer bread. Mix 6 eggs and 3 cups of milk, 1/2 teaspoon prepared mustard, 1 teaspoon Worcestershire sauce; mix together and pour over everything. Let it stand overnight. Next morning make 3 cups of crushed cereal and 1/2 cup butter. Sprinkle on top and bake at 350 degrees for 1 hour.