Allow the steaks to rest at room temperature for 30-60 minutes if you have time. Preheat oven to 400 degrees convection or 425 conventional.
Trim and season steaks to your taste. I use 7:2:2 (my homemade seasoning). If you don't have that, you can season with a little coarse salt, pepper and granular garlic powder. Or anyway you want.
In an oven safe pan (I used my 10 inch cast iron) over medium high heat melt 1 tablespoon of butter or use oil. Some prefer an oil at this point due to lower smoke point of butter but I have never had a problem.
When hot, sear both sides of the steaks for 2-3 minutes. Sear close to the final color you want.
Transfer pan to the preheated oven. Now comes the variables. The steak thickness, how long you seared and the true temperaure of the oven. COOK TO THE TEMPERATURE, NOT BY TIME ALONG.. Remember that you may get a few more degrees after removal from the oven.
It took 7 minutes to get to 150(medium). Remove from the oven and allow to rest for a few minutes before serving. COOK TO THE TEMPERATURE, NOT BY TIME ALONG.