Place the pork in a shallow baking dish and cover loosely with foil. Do the same with the mac and cheese. Place them in the oven and stir every ten minutes until warmed through.
Put the beans in saucepan over a medium heat on the stove top and warm, stirring every now and then.
Assemble in three separate quart sized containers
Place ⅓ cup of mac and cheese in the bottom of each container.