Microwave 2 potatoes on high, 6-8 min, flipping over halfway through cook time (caution, that's a hot potato!); carefully cut in half + set aside

Meanwhile, heat 1 tbsp oil in skillet over med-high; pat steak dry, season with salt/pep + sear 3-4 min per side for med-rare (for more well done add 1-2 min per side); for best results, use tongs to hold steak up on its edges for 1 min to render fat crispy; rest 5 min + slice in half

Wash chives + thinly slice; add steak + potatoes to plates, then dollop each potato with 1 tbsp sour cream + sprinkle with chives