Defrost your steaks overnight in a refrigerator or for 2 -3 hours at room temperature.
Pre-heat your oven to 190c. Remove from the vacuum pac from the steaks and season with salt and black pepper.
Then place the steaks in hot olive oil and butter in a frying pan, cook for 2 – 3 mins then turn cook for a further 2 mins. Place your steaks in hot oven 190c for 5 mins (medium -rare). If you prefer your steaks a little more well done cook for a further 2 minutes per level. (medium, medium-well, well done)