Most TV dinners, if not all of them, ( including Hungry-Man dinners)are precooked. Preservatives and other things are included in the dinners so that they can be frozen and reheated at a later time. These meals are actually hard to make because they must be cooked and reheated without losing the taste. Many TV dinners are made so that the consumer can put them in the microwave and heat them up quickly.
Hungry-Man dinners usually follow the same process. First, the vegetables are cut and prepared. Then they are boiled. The meat is then cut and prepared and then it is cooked in an oven. The finishing touches are made to the dinner before it is packaged and sent to the grocery stores.