1.5 - 2 inch thick steak
Salt
Pepper
Canola/Vegetable oil
Optional, butter

1 5 - 2 inch thick steak

1. Add cast iron pan to oven.

2. Set oven to preheat to 250 F.

3. Place aluminum foil into a baking sheet. Place a baking grid (wire rack) on top of the aluminum foil, and steak in the middle of the rack.

4. Season steak liberally on all sides with salt and pepper. Insert thermometer of choice into steak.

5. When oven reaches temperature, add baking sheet with aluminum foil, wire rack, and steak to the oven.

6. Flip after 20 minutes, but let cook until steak reaches 10-15 degrees below target temperature. (For Medium Rare, cook steak in oven to around 120 F; around 30-35 minutes).

7. Remove baking sheet and cast iron pan from oven, and let steak rest for 5-10 minutes. Add additional salt and pepper to steak.

8. While steak is resting, add just enough oil to cover the base of the cast iron pan, and place over medium-high heat just past slightly smoking.

9. Add seasoned side of the steak to pan. The cast iron pan should sizzle loudly when the steak is added. Press down across the steak with tongs to ensure that all parts of steak are being seared. Season the "up" side of the steak with additional salt and pepper.

10. After 30 seconds of cooking, feel free to toss a tablespoon of butter into the oil. After 60 seconds of cooking, flip the steak and sear for another 60 seconds.

10. While searing, optionally baste the steak with a spoon by filling the spoon with the oil collected at base of pan and pouring over the steak.

11. Optionally turn the steak and sear sides for 30 seconds each.

12. Remove from pan to cutting board. Let rest for 5-10 minutes, then slice thickly against grain and serve.