Add quartered russet potatoes and water to your Instant Pot inner pot.
Place the lid on your Instant Pot, make sure the valve is in the sealing position and cook on High Pressure for 15 minutes.Once it’s done cooking, allow for a natural pressure release for at least 10 minutes then release the remaining pressure and open the lid.
Immediately add the butter, sea salt and pepper along with half of the cream to the cooked potatoes and stir until the butter is melted.
Blend with an electric hand mixer, adding more cream and mixing until you’re happy with the consistency. Taste and adjust salt and pepper.
Serve your fluffy Instant Pot Mashed Potatoes with your favorite meals.