Place macaroni noodles, broth, butter, and salt in the pot of your Instant Pot. Set the Instant Pot to high pressure cook for 4 minutes.
Do a quick release and remove the lid after all the pressure has been released. There will still be a little bit of water in the pot. Do not drain.
Pour milk, garlic powder, paprika, ground mustard and black pepper into the pot and stir until combined.
Slowly add the shredded cheese, stirring constantly until cheese is melted and mixed well.
Serve immediately.
Notes
This also works well with gluten free pasta or Banza chickpea pasta.We tested the recipe with 12 ounces of pasta so if you are using more or less you will have to adjust broth amounts.