Steps
1. Season the steak with salt and pepper.
2. Heat olive oil in a pan over medium-high heat.
3. Sear the steak for 3-4 minutes per side for medium-rare (adjust cooking time based on desired doneness).
4. Let the steak rest for a few minutes, then slice it thinly.
5. In a bowl, toss the mixed greens, red onion, and cherry tomatoes.
6. Place the sliced steak on top of the salad.
7. Drizzle chimichurri sauce over the steak.
8. Serve and enjoy!