Heat a cast-iron or oven-safe skillet on high heat add olive oil and butter, once butter is melted and done foaming add steaks. Cook for 2 minutes then flip and cook another 2 minutes, this gives the Filets a nice brown sear. Place pan in the oven and cook for 7-8 minutes or until desired doneness. Using a
meat thermometer you can check the temp. Rare - 120-125F, medium rare - 130-135F, medium - 140-145F, medium well - 150-155F and well done - 160-165F.