While Banquet's Salisbury Steak meal is not really a microwave meal because you have to cook it in the oven, it does fall into a similar category of "easy prep" meals. These dishes do contain some vitamins and minerals and a good level of protein and fiber. However, these meals also have high salt, fat, and MSG levels that you must understand before buying and eating one, even compared to a homemade Salisbury steak.