If baking, a turkey London broil should be cooked for 50 to 60 minutes and basted every 20 minutes with juices in the dish. If grilling, allow 15 minutes per pound and turn the breast every 10 minutes, moving the breast to indirect heat after 15 minutes.
Cooking a turkey London broil requires about 20 minutes of work time and a total preparation time of about one hour and 20 minutes. Before baking, the oven should be preheated to about 350 degrees Fahrenheit. Before serving, the turkey should be checked for doneness by inserting a food thermometer at the thickest part of the breast and verifying a temperature of 165 F.