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–+ servings
a baking sheet with chopped frozen onions on a piece of parchment
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How to Freeze Onions

Learn all the tips and tricks for freezing onions to save time and money. Learning how to freeze onions (diced, green, sliced, rings, and whole) is a great way to preserve this delicious staple of so many recipes.
Prep Time5 minutes
Freezing Time3 hours
Total Time3 hours 5 minutes
Course: How To
Cuisine: American
Keyword: can you freeze green onions, can you freeze onions, Freezing chopped onions, How to freeze onions
Servings: 4 cups
Author: Sarah Cook

Equipment

Ingredients

  • onions

Instructions

Freezing Diced Onions

  • Line a rimmed baking sheet with parchment or a silpat. 
  • Chop or dice the onions to your preference.
    onions
  • Place the onions on the baking sheet and move them around so they aren't too clumped up, and place the tray in the freezer. Freeze for 3 hours.
  • Break apart any clumps that have formed on the baking sheet and transfer the onions to freezer-proof storage.

How to Freeze Onion Rings/Strips

  • Drop the sliced onions into boiling water for 15 seconds.
  • Once the time is up, strain the onions through a colander and immediately add to a bowl of ice water for two minutes.
  • Strain again and set aside to drain. Allow onions to dry on a clean towel. 
  • Place on a rimmed baking sheet lined with parchment and freeze for 3 hours. Transfer to freezer storage.

How to Freeze Whole Onions

  • Blanch small onions for 3 minutes and large onions for 7 minutes.
  • Once the time is up, immediately add the onions to a bowl of icewater for five minutes.
  • Strain and set aside to drain. Allow onions to dry on a clean towel. 
  • Place on a rimmed baking sheet lined with parchment and freeze for 5 hours. Transfer to freezer storage.

Notes

  1. If you have a lot of onions to freeze at once, lay another piece of parchment on top of the onions and top with an additional layer.
  2. Make sure you're using sturdy freezer-safe storage to keep the onion smell contained.
  3. Frozen onions will last in a conventional freezer for six months or a deep freezer for a year.
  4. If onions make you cry, chill whole onions in the fridge for 1 hour prior to cutting.

Nutrition

Serving: 1cup | Calories: 46kcal | Carbohydrates: 3g | Protein: 1g | Fat: 1g | Saturated Fat: 1g | Sodium: 1mg | Potassium: 40mg | Fiber: 1g | Sugar: 1g | Vitamin C: 2mg | Calcium: 6mg | Iron: 1mg