Combine Banza pasta, water, salt and butter of your choice in the bowl of the Instant Pot.
Lock the lid in place, press "Manual" on the Instant Pot and reduce the time to 4 minutes.
Once the Instant Pot pressurizes, the timer will start counting down the 4 minutes. When 4 minutes it up, quick release the pressure.
When pressure is released (in my model, you know for sure it is released as the silver insert in the steam port disappears), remove the lid. Add the milk to the pasta and stir.
Press the "Saute" button on the Instant Pot and cook until the milk begins to bubble. Once it is bubbling, stir the cheese in. Continue stirring until all cheese is melted.
Serve immediately. Remove any macaroni and cheese from the bowl, do not leave it in the Instant Pot as it is hot and will scorch on the bottom of the bowl. No fun cleaning that up. (Ask me how I know...)
Recipe and Photos Copyright Johnna Wright Perry, In Johnna's Kitchen. Do not reprint without express written permission.