I have never attempted to dry food in a microwave oven. A food dehydrator is always my first choice. I have, however, heard of people who have dried herbs or flowers in a microwave. Before attempting either of those procedures, it is important to check the warranty of the microwave oven you own to see if the manufacturer recommends using it for these purposes. Some manufacturers do not and will not honor the warranty agreement if their machine breaks down when it has been used for this purpose.