I generally cook rotini noodles.
- Cook the hamburger (or other meat) using the Saute mode.
- Add any additional spices (i.e. basil, garlic).
- Add the pasta.
- Add the pasta sauce.
- Add water to cover the pasta, then add another 3/4 inch.
- Cook on high pressure and then quick release when done.
Cook time depends on the pasta. I found a recommendation online to use half the time on the pasta package and add 1. So a 10 minute cook time on the package would be 6 minutes in the instant pot. I have found this to be good for every pasta so far.
You can always switch to Saute to cook some more if you have too much water.