Tear corner of cauliflower rice to vent + heat in microwave 90 sec (careful—it'll be hot!); if using a skillet, warm 2 min with 1 tbsp water; divide to plates

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

Divide steaks to plates then drizzle each with pesto aioli