Turn Instant Pot on saute and allow inner pot to become hot.
Once hot add in sausage and break apart with wooden spoon. After the sausage is broken apart add in diced white onion, garlic and allow to brown for about 5 minutes.
Push cancel on Instant Pot.
Add in salt, pepper, potatoes and chicken broth.
Close lid and seal the valve on the Instant Pot. Push the manual or pressure cook button and adjust the time to 5 minutes.
When timer goes off allow for a 5 minute natural release. Once the time has gone to five minutes, release any remaining pressure and then open the pot.
Push cancel and then press saute. Add in chopped kale with stems removed and stir. Allow to simmer for about 3 minutes then add in heavy cream. Stir again.