Slice asparagus into ½-inch pieces, discard any tough pieces; wash zucchini, then slice on the diagonal into ¼-inch pieces; thinly slice ½ of onion; heat 2 tbsp oil in skillet over med-high, add to veggies to a large pan, season with salt/pep + sauté 5-6 min until tender; set aside

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 steak + veggies to plates