OK, in my family, my mom's mac-n-cheese is legendary. It's not the kind with a creamy sauce, though. I love how it gets a little crunchy on top. Basic recipe:
Cook noodles. Put half of them in a large casserole dish.
Cover with half the cheese. Sprinkle with S&P to taste. Pour in
enough milk so that you can just see that most of the noodles are
moistened. Add the rest of the noodles followed by the rest of the
cheese, and more S&P if desired. Add a bit more milk -- enough so
that when you tilt the dish a bit, you can see the milk. Cook 30 mins.