Season steak with spices.
Press "saute" and add the butter. When it melts, add steak and sear on all sides.
Remove the steak from the Instant pot.
Add beef stock and stir a bit to clean the bottom.
Insert the trivet into the Instant pot or place aluminum foil balls. Place the steak on top of the trivet.
Close the lid and cook on high pressure for 15-20 minutes (depending on it's size).
Once the cooking time ends, do a quick pressure release.
Open the lid and remove the steak from the Instant pot.
Add the starch to the Instant Pot and whisk with the beef stock. Cook until thickened. This is your tasty gravy.
Combine remaining butter with garlic in a small bowl.
Serve steak topped with garlic butter and the gravy.