Delmonico Potatoes

Yield:	12 Servings
Categories:	Main Dishes, Side dishes

6	lb	Potatoes; russet or Idaho
8	tb	Butter
1/2	ts	Dry mustard
3	tb	Flour
1	qt	Milk; (I use 1 % - whole can also be used)
16	oz	American cheese; Old English Sharp
1 1/2	ts	Worcestershire sauce
1/4	c	Bread crumbs; toasted, buttered