Stir until browned.
Pour in the stock and scrape to remove anything stuck to the bottom
Turn off the Instant Pot and pour in the kidney beans.
Pour in pasta sauce or passata and dried pasta. Press the pasta down so it is just below the surface.
Lock the Instant Pot lid and set the vent to sealing.
Press the Manual button and cook for 2 minutes.
When the timer beeps, release the vent slowly.
Remove the lid, stir, and serve.