Combine all ingredients in a large Ziploc bag and seal. Let marinate for a few hours in the fridge (overnight is even better!)
Once the meat is ready, heat a few tablespoons of olive oil in a large skillet over medium-high heat. Place steak in pan and allow to cook for 6-7 minutes.
Important: do not move meat. Let it sear!
Flip meat over, cook another 5-8 minutes, depending on thickness. Mine was pretty thick so it took on the longer end.
It’s important not to overcook London broil as it will get tough. Medium rare is perfect for this cut of meat.
When the meat is done and crisped on the outside, pull out of pan and set aside to sit for about 10 minutes before carving.