I just don't see the thinking here.

• buy a decent steak
• leave it out at room temperature for an hour so that it will cook properly. During this time, prepare the vegetables, potatoes, sauce that will go with it.
• cook the steak for two minutes a side in a heavy frying pan on high heat
• let the steak rest somewhere warm for ten minutes while you finish assembling everything else.

I could spend a fucking fortune, enough to live on for months, to cook my steak upright in a toaster for 90 seconds instead, for a worse end result, and it would save me zero time, because cooking the steak is not the time-critical step here.

Would only save you time if you're buying the kind of steak that can be cooked in 90 seconds, and taking it straight from the fridge, cooking it, and then putting it in sandwich, and anyone who thinks that sounds a good idea frankly doesn't deserve to have a decent steak.