Before we had mac and cheese, voluptuous and gooey and gilded with bacon, lobster and/or truffle, there was plain old “macaroni cheese”, which has been enjoyed in the UK since at least the 14th century.
Nineteenth -and 20th-century versions tend towards the mild and creamy, and it’s perfect comfort food … though, of course, there’s nothing to stop you ramping up the cheese, if that’s your particular idea of solace.