Cook the London Broil 3 – 6 minutes a side depending on the thickness and how well done that you like it.
Before you slice it let it rest in a dish, that will catch the drippings, for at least 5 minutes. Before you slice the meat look at the side of the steak and notice that the grain runs on an angle. Slice on an angle opposite to the grain. This will make the slices more tender and chewable.