Place the mac and cheese and milk in a microwave-safe bowl. Heat until piping hot, stirring halfway through until the sauce is creamy.
Pack for Lunch
Fill a thermos with boiling water and let it sit for 5 minutes. Empty the water, immediately add the hot mac and cheese, and close the lid tightly. Pack the thermos inside a lunch bag with your favorite sides.
Notes
This method works with homemade or boxed mac and cheese.
Reheating with a splash of milk or water helps restore the creamy texture.
A preheated thermos keeps lunch warmer for longer.