Homemade Onion Powder

Name: Homemade Onion Powder from Fresh Onions
Prep time: 10 min
Cook time: 5 h
Total time: 5 h 10 min
Yield: 1 servings
Ingredients: 3 medium yellow onions; 1 tsp salt

Homemade onion powder is made by dehydrating fresh yellow onions and grinding them into a potent spice with deep, caramelized onion flavor that outperforms store-bought versions.

🏷️Onion powder 🏷️Homemade spices 🏷️Spice blend 🏷️Dehydrated 🏷️Onion Pantry-staple

🏷️

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callmecandace.tvonTikTok

Total

5h 10m

Servings

1

Difficulty

Easy

Est. Cost

$8–$13

Recipe Source

View original recipe

From TikTok · by callmecandace.tv

-0:00

callmecandace.tvonTikTok

Ingredients

3 medium yellow onions
1 tsp saltoptional

2 Ingredients

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Instructions

1
Peel and roughly chop the onions. The smaller the pieces, the faster they will dehydrate.
2
Spread the chopped onions in a single, even layer on a parchment-lined baking sheet.
3
Dehydrate the onions at 130°F for 5-8 hours. You can use a dehydrator or an oven set to its lowest temperature. The onions are ready when they are completely dry and brittle.
4
Transfer the dehydrated onions to a spice grinder, blender, or food processor. Add the optional salt.
5
Blend until a fine powder is formed.

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Tips & Notes

Pro tips

Slice onions uniformly (about ¼-inch thick) so they dehydrate evenly without over-drying the thin pieces.
Dehydrate at 135°F or lower until onions are completely brittle and snap, not chewy—any moisture left behind will cause clumping.
Grind in small batches and sift through a fine mesh to remove larger pieces and ensure consistent powder texture.
Let the finished powder cool completely before sealing to prevent condensation, which introduces moisture and spoilage risk.

Substitutions

Yellow onions → white onions (sharper flavor, less sweetness)
Yellow onions → red onions (earthier, slightly spicier profile)

Storage & make-ahead

Store in an airtight container in a cool, dark place for up to 6 months; avoid exposure to humidity.

Equipment

dehydrator or oven · spice grinder or coffee grinder

Common Questions

How long does homemade onion powder last?

Store in an airtight container away from heat and moisture for up to 6 months. Shelf life depends on storage conditions and how well moisture is excluded.

Can I use white or red onions instead of yellow?

Yes. Yellow onions are traditional for their sweetness, but white onions work and red onions will add a slightly sharper flavor. Results will taste the same overall.

Do I need a dehydrator?

A dehydrator is ideal, but you can use your oven on the lowest setting with the door cracked open, or an air fryer on low temperature, checking frequently.