Onion powder is made from dehydrated ground onions. It can be used in any recipe that requires fresh onion and is excellent when added as a dry rub or in a marinade. When time is limited, its a practical replacement, although the flavor may not be as intense as its fresh counterpart.There are other advantages to having a container on hand: No need to worry about making a special  trip to the store when you are out of fresh onions.
No oil is required for cooking.
No teary eyes when slicing and chopping.You can even make your own powder dice and dehydrate an onion, grind it, and store it in an airtight glass container.Storage TipsLike other seasonings, it can be kept in a cool, dry spot for several months.
Always be sure the container is tightly closed.Usage TipsOnion powder is a terrific complement to many foods: Include a dash in gravies and sauces.
Add to breads: it is a tasty addition to buttered and toasted baguettes or slices of French bread.
Sprinkle over salads or add a dash to  cooked vegetables.
Stir into soups and chowders.
Include in hamburger patties.