01 -
Mix olive oil, balsamic vinegar, minced garlic, Dijon mustard, salt, and pepper in a large bowl. Add the steak, coat it well, and let it sit for at least 20 minutes at room temperature or up to 12 hours in the fridge.
02 -
Bring water and salt to a boil in a small pot. Add the couscous and olive oil, stir once, then remove from heat. Cover and let stand for 5 minutes. Fluff with a fork when done.
03 -
Heat a grill, grill pan, or cast-iron skillet to medium-high. Cook the steak for 4-5 minutes per side for medium-rare, 6-7 minutes for medium, or 8-9 minutes for medium-well (internal temperature of 130-135°F, 140-145°F, or 150-155°F respectively). Transfer to a cutting board and rest for at least 5 minutes before slicing thinly against the grain.
04 -
While the steak rests, combine the chopped lettuce, tomatoes, cucumber, red onion, and olives in a large bowl. Drizzle with olive oil and lemon juice, then toss to combine. Season with salt and pepper to taste.
05 -
Divide ingredients evenly among 4 bowls: spread hummus on the bottom, then add couscous, mixed vegetables, and sliced steak. Finish with crumbled feta cheese and fresh parsley.
06 -
Leftover steak and couscous can be cooled and stored in separate airtight containers for up to 4 days.