I have a striploin steak that's about 2 inches thick. I'm going to sear it in a hot pan on all sides. And then put it in the oven to cook it.
I want it to come out medium to medium-well.
How long do I need to bake it for and at what temperature?
I think this question is hard to answer exactly. The easiest way to estimate the duration of the steak in the oven is to cook the steak at ~260°C and after >3 minutes each side (altogether >6 minutes) to measure the inner temperature of the steak. 57-60°C should be medium rare. Of course this his method requires a thermometer. (source: here and here)