Preheat a 10-inch skillet over high heat until very hot. Add the canola oil and swirl the pan to evenly coat the bottom. Using paper towels, dry the steak and season generously with salt and pepper on both sides. Add the steak to the skillet and cook on high, without moving, for 4-5 minutes. Flip and cook until desired doneness, about 4 minutes more for medium rare (depending on the thickness of the steak). Remove steak from the skillet and allow to rest for 5-10 minutes before cutting into thin slices.
Transfer the dressed noodles to a large platter and arrange the sliced steak over top. Drizzle with any accumulated juices from the steak and the remaining dressing. Sprinkle with the cilantro and peanuts.
Check out the video below to see Sarah make this delicious salad.