Really RAW onion powder. I do this to many vegies that start to go bad. Beets, Celery, Onions, even Greens and then use them for flavorings.
4 large Sweet Vidalia onions or as many as you want.
Cut onions into chunks and put in blender (I used a vita mix) blend until smooth.
Pour onion puree onto non stick dehydrator trays as if you were making a fruit roll up. Let it dry overnight. When bone dry break up the sheet and put it into the blender. (I used the dry blade of the vita mix) And blend until a powder. So simple so tasty, use for any onion flavoring.