You can keep your mac and cheese moist by using a pasta that will hold the cheese in its grooves (e.g. u003ca href=u0022https://amzn.to/2XUgVseu0022 target=u0022_blanku0022 rel=u0022noreferrer noopener nofollowu0022u003eshellsu003c/au003e) and also by making sure you have enough cheese sauce. I always make a little extra cheese sauce to add to the leftovers.