"We were soooo hungry and had a london broil in the fridge, but had forgotten to marinate it. We found this recipe and went with it. We doubled the recipe and added a little cornstarch, as suggested on one of the reviews we read. We were afraid of it burning because our oven won't heat with the door open :-/ and it smelled a little like it might be burning, so we kept checking on it. Because of this, I don't know how long we cooked it on each side. All I know is IT CAME OUT PERFECT! For some reason it was the most tender london broil I've ever had. We did let it come to room temp before cooking it and let it rest after cooking it. This might be one secret to making it tender. We also thought that maybe we were getting the burned smell because we added the cornstarch. Anyway, it didn't effect it negatively. IT WAS AWESOME!