1. Let steak stand at room temperature for 30 min.
2. Preheat oven to 450°.
3. Season steak with salt and pepper to taste. 
4. In a cast iron or other heavy oven-safe skillet, heat a small amount of oil or butter (enough to lightly coat the bottom of the pan) over high heat until it shimmers but does not smoke. 
5. Add steak; cook on one side until a moderately dark crust forms and steak releases easily from the pan. Turn and cook until both sides are seared in this manner. 
6. Move pan to preheated oven; roast steaks to desired doneness as measured with a thermometer.
7. Remove from oven; remove steak from pan and tent loosely with foil. Let rest for 5 min. or more before serving (larger steaks can rest longer).

Nutrition Note:

• This recipe is rich in vitamin B12, iron, zinc and selenium.