Dehydrated food lasts longer and is virtually as nutritious as fresh. Dehydrated food has 5 to 8 percent of its original moisture content. That makes it much lighter and easier to store and to carry than fresh food. It can also simply be for fun to eat, especially for young children. It might be very difficult to get kids to eat bananas, for example, but offer them some dried banana chips and its all you can do to keep them from gobbling down handfuls at a time.
Cut your fruits, vegetables and meats (steak and fish) into strips or pieces no more than 1/4 inch thick.
Lay your pieces of cut-up food on wax paper which has been sprayed with a non-stick vegetable cooking spray with the fleshy or meaty side up (rind or skin facing the wax paper).
Microwave on the medium power setting for 10 minutes. Turn your pieces of drying fruits, vegetables or meat over and microwave on low power for an additional 15 minutes.
For crispier or dryer foods, continue the drying process in a conventional oven at 200 degrees F for an additional 20 minutes---although this step is not necessary for most foods.
Many fruits, such as apples and bananas, can be dipped in lemon or lime juice just prior to being dried in order to preserve their natural color better.