onion powder from fresh onions
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5 from 14 votes

How to make onion powder from scratch

Making your own onion powder from scratch is so easy, and it tastes SO much better than store-bought, you just might never buy it again!
Prep Time15 mins
Dehydration time4 hrs
Total Time4 hrs 15 mins
Course: Side Dish
Cuisine: American
Keyword: homemade condiments
Servings: 1 Tbsp
Calories: 24kcal
Author: Anna



  • fresh onions


  • Slice onions thinly. 1/4" or thinner works well.
  • Divide slices into rings - rings dehydrate MUCH faster than whole slices.
  • Lay rings out on dehydrator trays - it's totally ok for them to touch and overlap.
  • Dehydrate at 135 degrees, for 4-6 hours, until onion slices are dry and brittle.
  • Using a food processor, blender, magic bullet, or even a mortar and pestle - grind dried onion rings into powder of the consistency you'd like. For coarse powder, this doesn't take long at all! Finer powder takes a few extra seconds.
  • Store in a tightly-sealed container, in a cool, dry location.


Calories: 24kcal | Carbohydrates: 5g | Protein: 1g | Fat: 1g | Saturated Fat: 1g | Sodium: 5mg | Potassium: 68mg | Fiber: 1g | Sugar: 1g | Vitamin C: 2mg | Calcium: 27mg | Iron: 1mg