Alton Brown's Baked Macaroni and Cheese:
http://www.foodnetwork.com/food/recipes/re...6_18422,00.htmlThe tricks to this dish:
1. When he says finely diced, he means finely diced. I've heard people complain about it being "too oniony", and upon inquiring found out they'd only chopped the onion.
2. Double up on the panko topping.
3. If you're a mustard-head like me, a little extra is just fantastic.
4. Use a good, sharp cheddar like Cabot's Extra Sharp.
The theoretical treatment for the leftovers is to slice it up, breadcrumb-coat it again, and fry it... but I've never actually had any leftovers left after making this, so I wouldn't know how that works out.