Preheat oven to 400°, mix halved brussels with 1 tbsp oil + 2 tsp of seasoning; place on a sheet pan + roast 17-25 min until golden + tender

Meanwhile, heat 1 tbsp oil in skillet over med/high; pat steak 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 steak 5 min

Boil a pot of water + place the mash in its plastic packaging into the boiling water, then cover the pot + warm 6-8 min; empty into a bowl and stir until smooth; divide all between plates—looks great!