Make Your Own Onion Powder And Onion Salt

If you grow your own garden, or even if you just know how to frugally purchase your produce, then there is no need for you to spend a lot of money on your spice rack.

Here’s how you can easily make your own onion powder and onion salt for pennies.


Dried onions are so beautiful and aromatic. See what you can make with them here.The first thing you will need to do is dehydrate your onions.  I use white onions for all of my dehydrating needs.  I have never tried this with my yellows or sweet purples.  Click here to see how I dehydrate onions every year.

If you let your onions cure before dehydrating them, then you’re ready to make your mixes.  If not, place in a freezer bag in your freezer for 2 weeks or more.

Make sure you have something to store your new salt and powder in.  You can use old spice bottles if you want.  I always keep the glass ones, and occasionally someone gives me their old glass ones.  I never throw them away.

If you want to make a bigger batch (since that really is the easiest way to go), then grab an appropriate sized canning jar.  You can dry can a bigger batch (this is what I do), or use these lids for your jars.  When all else fails, small peanut-butter lids fit regular sized canning jars.

It's super easy to make your own onion salt and onion powder, and it will save you a ton of money!

Carefully place your dried onion in a small chopping appliance with the lid on. Turn on until you’ve got a fine powder.  Leave the lid on until the powder settles. Taking it off immediately will probably result in a fine onion powder in your face.

If you want onion powder, you’re done.  Pour into your bottle (using a funnel if you have one) and you’re done.

If you want onion salt, mix three parts table salt with one part onion powder. Mix well, and pour into your bottle (again, using a funnel if you have one).

Label and store as you normally would.



  1. I do this, and it’s great, except I find it difficult to use it after a while because it cakes together. Is there a way to ensure this won’t happen, or even how to soften it up when it’s time to use it? I have the same issue with garlic powder/salt.

  2. This is such a good idea (if I were any good at gardening . . .) I’ve heard that spices are one of the most adulterated foods you can buy. It’s pretty sad, considering how expensive they are. Plus, they’re probably irradiated. I bet your onion powder tastes a million times better than what you can buy in the store.

    • I’d like to think it tastes better 😉 . It is certainly more aromatic.
      You don’t even have to be good at gardening Karen. Look for a sale–onions are super cheap at certain times of the year. Plus–if you have a friend with a garden, they probably have tons extra. We grow about 400 every year. We braid the sweet red ones and give away strings to many friends. I’m sure your gardening friends would love to share with you!

  3. Great instructions for making onion powder and onion salt. I appreciate learning about putting the onions in the freezer for two weeks.

    • It took me awhile to appreciate putting them in the freezer myself. It would be so much easier to store them than to wait the two weeks, but it’s just not as good in the long run.

  4. Great idea. I should do this with our white onions too. I agree with not using the purples. I don’t think the flavor would be as good because they’re milder.

  5. The link on his to dehydrate the onions wouldn’t work … neighbor gave he a 20lb bag and I really want to make this can you email me more instructions?? Greatly appreciate you sharing!! It’s wonderful ????

  6. To be clear…the cure you put the onions in the freezer for 2 weeks before dehydrating them? Are they chopped?

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