Directions:
In a blender, add cilantro, lime juice, olive oil, garlic, scallions, serrano, and salt. Blend until smooth.
Reserve 1/2 cup of marinade for serving. Place steaks in a large dish and pour remaining marinade over the top, Turn steaks to coat both sides with marinde.
Cover dish with plastic wrap and chill 2-3 hours, flipping once.
Grill to desired internal temperature and enjoy!