How to Dehydrate Onions (Minced Onions, Flakes and Powder)
Why You’ll Love This Recipe
Dehydrated onions are one of the easiest pantry staples you can make at home. They store well, save money, and let you turn a big harvest or bulk bag of onions into minced onions, flakes, or a smooth onion powder you can use in everyday cooking. This fits perfectly into a practical homestead kitchen where nothing goes to waste.
And once you start dehydrating foods, you will want to start dehydrating more foods. Like tomatoes, apples and other fruits and vegetables.
What You’ll Learn
- Storage tips for long lasting flavor
- How to prep onions for dehydrating
- How long onions take to dry
- How to turn dried onions into minced onions, flakes, and powder
- How many dried onions you get from fresh
- Whether the oven works for dehydrating
How to Dehydrate Onions
- Prep the Onions: Peel and slice your onions evenly. You don’t need to chop them small because they shrink and crisp during drying. Even slices help everything dry at the same rate.
- Load the Dehydrator Trays: Fill the trays generously. Onions shrink a lot, but they still need airflow. Spread them out so they aren’t piled on top of each other.
- Dry Until Crisp: Dry at the temperature recommended by your dehydrator, usually around 125 to 135 degrees. Onions take several hours and should be completely crisp when finished. Any softness means they need more time. Because onions release a strong odor, many people run their dehydrator outside or in a garage.
- Turn Dried Onions Into Minced Onions or Powder: Once crisp, pulse them in a blender or food processor.
For onion powder, grind fully and sift through a mesh strainer to remove larger pieces.
For minced onions or flakes, pulse lightly.
Yield: How Many Onions Do You Need?
We dehydrated 15 pounds of fresh onions and ended up with:
| 15 Pounds of Fresh Onions Makes | Type of Onions |
| 1 quart | dried onion flakes |
| 1 cup | onion powder |
This was done in two rounds using nine dehydrator trays.
Can You Dehydrate Onions in the Oven?
You can, but it requires more monitoring. Use the lowest temperature your oven allows and check often to prevent burning. A dehydrator is easier because it dries at lower temperatures and doesn’t need constant attention.
Frequently Asked Questions
How do you dehydrate onions?
Slice onions, spread them on dehydrator trays, and dry until crisp. Then grind into flakes or powder depending on what you want.
Do I need a dehydrator?
A dehydrator is best because it uses low heat and prevents burning. The oven works, but you’ll need to watch it closely.
How full should the trays be?
Fill trays generously but leave space for airflow. Overcrowding leads to uneven drying.
Can I make onion powder?
Yes. Grind dried onions completely and sift to get a fine powder.
Why dry onions instead of storing fresh?
Dried onions last longer, take up less space, and are ready to use anytime.
Storage Tips
Store dehydrated onions in airtight jars in a cool, dark place. Onion powder should be kept tightly sealed to prevent clumping. Properly dried onions can last for years.
Homemade Dehydrated Onions (Minced Onions, Flakes, and Onion Powder)
Ingredients
- onions
Instructions
- Prepare the onions by cutting off the ends and removing the out skin.
- Cut the onions into 1/2 inch slices and place into a zip bag.
- Place the bag(s) into the refrigerator and allow them to sit for 3-4 hours (optional)
- Place the onions onto dehydrator trays.
- Put the full trays into the dehydrator and set temp to 135F.
- Allow the onions to dehydrated 15-20 hours. The onions should be crisp.
- Remove the onions from the dehydrator.
- Take your grinder (we use a coffee grinder) to grind the onions to small pieces.Alternatively, if you don't want them small, place into the jar and press down to make them smaller, but not minced.
- Use the mesh strainer to separate the powder from the chopped onions.
- Place the powder into a separate jar.
- Stir the mix for a few days as there may be a little moisture left.
- Label and place the jar tops on.
Video
Notes
