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 fat side for 1 min to render fat crispy; rest 5 min + slice in half

Cut onion in half from root to stem, peel + thinly slice ½ of onion; wash, then slice zucchini into ¼-inch rounds; heat 1 tbsp oil in a 12-inch skillet or large pot over med-high, add onions + zucchini to pan, season with salt/pep + sauté 4-5 min until tender

Divide all to plates + sprinkle steaks with 1-2 tbsp cheese each—looks good!