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Writer's pictureElizabeth Kirk

Homemade Onion Powder: Freeze Drying Onions!

Today on the homestead we took a handful of onions and turned them into an onion powder using our Prep4Life Cube freeze dryer! Here's how it's done:



Ingredients and Tools:

  • Fresh onions (any variety)

  • Freeze Dryer (we use the Prep4Life Cube)

  • Knife and cutting board

  • Food processor or blender

  • Airtight containers for storage


Step-by-Step Instructions:


  1. Prep:

    • Peel and chop onions into small pieces - I like to chop the onions into chunks and then use my food processor to dice them smaller.


  2. Pre-Freezing (Optional):

    • Lay the chopped onions in a single layer on the freeze dryer trays.

      Place the trays in your regular freezer for a few hours until completely frozen. This step can speed up the freeze-drying process but is not required.


  3. Freeze Drying:

    • Load the Freeze Dryer: Place your freeze dryer trays into your freeze dryer and follow the manufacturer's instructions for your specific freeze dryer.


      Prep4Life freeze dryer instructions: Insert your food, make sure the drain is closed, choose frozen or unfrozen, then choose start. Drying process typically takes 24-48 hours (My first batch took 41 hours unfrozen)


    • Check for Dryness: Ensure the onions are completely dry and brittle. If any pieces are still soft, run the machine for a bit longer.


  4. Processing into Powder:

    • Once the onions are fully dried (they will be light and crispy), place them in a food processor or blender and process on a low speed until you have the consistency you prefer.



  5. Store Properly: Transfer the onion powder into airtight containers. Mason jars or vacuum-sealed bags work well. Keep the containers in a cool, dark place to maintain the powder’s flavor and potency.


  6. Label and Date: Always label your containers with the date to keep track of freshness.


Use your homemade onion powder in soups, stews, marinades, and spice blends!

Making your own onion powder is a great way to preserve onions and ensure you always have this handy ingredient on hand. Enjoy your cooking!




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