Set Instant Pot to cook 2 minutes under pressure.
Insert trivet or steam basket into Instant Pot and add 1 cup of water.
Place 2 ears of corn on each side of the trivet.
Place 2 ears of corn on top of the previous ears in the opposite direction.
Add 2 tablespoons of butter.
Now close the lid and set release value to seal.
Once the Instant Pot has cooked for 2 minutes under pressure, manually release pressure.
The corn will be hot, be sure to use tongs or silicone gloves to remove the ears.
Now add more butter and enjoy!