Place uncooked macaroni in a colander and rinse with water, then allow to drain.

In a large sauce pan, add the macaroni, milk, butter, dried mustard, and salt.

Bring to a simmer cover medium heat. Once it comes to a simmer, turn down to low.

It this point you need to say right by the pot and stir. You will stir for 15-20 minutes until the milk is mostly absorbed and the pasta is tender. You can add more milk if needed. Stirring will prevent a sticky burnt mess.

Add the cheese and stir to combine.

Remove the pot from the heat and cover with the lid and let sit for 5 minutes.

Stir and taste. Add more salt if necessary. Will serve 4.