After I made White Asparagus Risotto Cakes last week I was lucky enough to have some leftover white asparagus in my fridge.  I was planning to simply cook the asparagus and make a hollandaise sauce to serve with it, but when I saw the lonely little wedge of leftover Fontina in my cheese drawer I had another idea.  Why not make a cheese sauce instead of hollandaise and serve it topped with hardboiled egg?…