Go Back
Print Recipe
4.37 from 19 votes

How to Make Dried Onion Powder

Homemade onion powder is sweet, herbaceous, and versatile - adding the perfect pop of flavor to dang near any meal! It is one of our favorite homegrown seasonings. Onion powder is also super simple to make. When dried and stored properly, it will last over a year in your pantry. Come follow these 6 easy steps to make your own too!
Prep Time30 mins
Cook Time12 hrs
Course: Preserved Food, Seasoning
Keyword: Dried Onion Powder, Homemade onion powder, Onion powder, Preserved Onions


  • Food Dehydrator, or Oven
  • Blender, Food Processor, or other appliance for grinding
  • An air-tight glass storage container, such as a mason jar with lid


  • Fresh Onions


  • Wash the onions, and discard papery skin. Keep the greens to dry too, if they're still attached!
  • Slice onions into ⅛ to ¼ inch pieces place on dehydrator racks without overlapping.
  • Dry onions in a food dehydrator on 100 to 130 degrees Fahrenheit until completely dry. The slices should snap and crack crisply in half, and not bend.
  • To dry onions in the oven, spread them in a thin layer on a baking pan covered with parchment paper. Bake at 140°F until they are completely crunchy dry. It is suggested to stir and re-spread the onion bits every 30 minutes as you go. We have never done this, but read that this method takes a few hours.
  • Once fully dried, place the onions in a blender or food processor and pulse until a the desired powder consistency is achieved.
  • Transfer the ground onion powder into an airtight container and use it within one year.