London Broil Grill Time Chart. Grill steak covered 12 to 14 minutes over medium heat on preheated gas grill 16 to 19 minutes for medium rare 145F turning occasionally. The broiler and pan should be preheated for 10 minutes before placing the steak under the broiler in the oven.
Place steak on grid over medium ash-covered coals. So the best temperature will depend more upon how you like your London broil to taste accordingly on different levels of roasting or tenderness. The broiler and pan should be preheated for 10 minutes before placing the steak under the broiler in the oven.
5 minutes on each side.
Add additional seasonings such as salt pepper and herbs as desired. 12 minutes on each side. The broiler and pan should be preheated for 10 minutes before placing the steak under the broiler in the oven. Remove it from the marinade and place the London broil on the hot grill.