Preheat oven to 400°; slice ½ the potatoes half lengthwise, mix with 1 tbsp oil, salt/pep + fave spices, then spread on a sheet pan; roast 25-30 min until tender

Meanwhile, heat 1 tsp oil in skillet over med-high; pat both steaks dry, season with salt/pep + sear undisturbed 2-3 min; flip + cook an additional 2-3 min for med-rare (for more well done add 1-2 min per side); rest steaks 5 min on cutting board

Wipe mushrooms clean + thinly slice; heat 1 tbsp oil in a skillet over high, add mushrooms + cook undisturbed 3 min; sauté 3-4 min until browned + tender, add cauliflower rice to pan + cook 3-5 more min while stirring

Divide all to plates