How To Dehydrate Green Onions using a straightforward method that keeps their flavor and cuts down on kitchen waste. Use them in soups, stews, dips, or grind into onion powder for seasoning blends.
After 2 hours, rotate trays and continue checking every couple hours; green tops dry in about 6 hours, while thicker white pieces may need 4–6 additional hours.
Once fully dried, let onions cool completely, then store in airtight containers like mason jars or mylar bags; properly stored dehydrated onions can last a year or longer.