Tenderloin steaks, 1 1/4″ to 1 1/2″ thick
Salt & Pepper
1 Tablespoon vegetable oil
1 Tablespoon unsalted butter
Pat steaks dry and season both sides with salt and pepper.
Heat 1 Tablespoon vegetable oil and 1 Tablespoon unsalted butter in large skillet over medium-high heat.
When butter foams, add the steaks and cook without moving until well browned, 3 to 3 1/2 minutes.
Use tongs and flip them to brown the other side, 3 to 3 1/2 minutes for medium rare.
(For medium, reduce the heat to low and cook for 1 to 4 minutes more.)