Some areas of frozen food may begin to cook during the defrosting time. Holding partially cooked food is not recommended because any bacteria present would not have been destroyed. Don't forget about a food item that's been thawing in the microwave oven. Food should not be left out of refrigeration more than two hours. Microwave Cooking Debone large pieces of meat.
Bone can shield the meat around it from thorough cooking.
Arrange food items uniformly in a covered dish and add a little liquid. Under a cover, such as a lid or vented plastic wrap, steam helps destroy bacteria and ensure uniform heating. Oven cooking bags also promote safe, even cooking. This allows heat to conduct deeper into meat without overcooking outer areas. Stir or rotate food once or twice during microwaving, and turn large food items upside down so foods cook more evenly and safely.