Hit Sauté button on Instant Pot and add butter to melt.
Add diced onions and garlic to pot. Sauté until softened (approx 3 minutes).
Turn off sauté function and add potatoes and broth to pot.
Place lid on Instant Pot making sure the valve is set on sealing.
Hit the Soup button and adjust time to 7 minutes.
When the Instant Pot is done cooking do a quick pressure release.
While the pressure is coming down on the Instant Pot, cook pork sausage and prep kale.
Use a potato masher to break up some of the cooked potatoes and create a thicker broth. (Don't mash too much, you still want mostly large potato pieces).
Add cooked sausage, whipping cream and chopped kale to soup pot.