butter all slices of bread one side, and cover the bottom of a greased 9 by 13 lasagna pan with half of the bread, butter side up

spread Swiss cheese on top of the first layer of bread

cover Swiss cheese with layer of ham

cover ham with sharp cheddar cheese

cover of the cheddar cheese with the rest of the butter bread butter side up

in large bowl whisk together eggs, dry mustard, salt, pepper, onion powder and milk. slowly pour the blended mixture over the entire casserole until it all soaks in

cover and refrigerate overnight

before baking mix corn flakes and melted butter in a bowl and spread over the top of the egg bake

bake covered in a 350 degree oven for a solid hour or until the center of the egg bake is at 165 degrees. once the dish is up to temperature remove the cover 410 minutes to let the top and brown for best presentation.

let the egg bake rest for 10 to 15 minutes before serving to let it firm up