quick pickled red onions - quick and easy!

Quick Pickled Red Onions

These quick pickled red onions are so easy and so quick! You will never believe how easy it is to make your own! Jump to Recipe

quick pickled red onions - quick and easy!

Pickled red onions are a family favorite and they are great on everything!!

quick pickled red onions - quick and easy!
Quick and delicious! Love the color!

You Need A French Mandoline In Your Life

I start by using a mandoline to slice my red onion really thinly. Once you use a French mandoline to slice your veggies, you will never go back to using a regular knife and cutting board. A mandoline slices veggies so thinly and perfectly, but they are also super dangerous. I wear a microplane cut resistant glove while using my mandoline. I found one at Williams-Sonoma for about $15. Worth it! My mandoline is one of the more expensive versions from De Buyer – but I found it for a steal and had to have it. There are lots of mandolines available at any of your favorite cooking stores or online – just check the reviews and you will find one you love.

red onions in a jar
Thinly sliced red onions

To make these pickled red onions, you start by whisking together a few ingredients … I use my electric kettle to boil the water.

vinegar, salt, sugar, and water
Vinegar, sugar, salt, and hot water

You don’t even need to use the stove for these.

pouring hot water and vinegar over onions
Pouring hot water and vinegar over the onions

Before they start pickling …

Quick Pickled Red Onions
Quick Pickled Red Onions – before they pickle

Put them on anything!

quick pickled red onions - quick and easy!
Pickled red onions over a falafel and hummus bowl

You can start eating these quick pickled red onions about 20 minutes after you make them, but they are perfect after a few hours. They will keep in your refrigerator for a few weeks – but ours never last that long! We love to put ours on fish tacos (and really, any type of tacos), grain bowls, nachos, chili, falafel … you really can’t go wrong!

How To Make Quick Pickled Red Onions

How To Make Quick Pickled Red Onions

In just a few minutes, you can make delicious quick pickled red onions to put on everything!

Course Appetizer, Canning and Preserving
Cuisine American
Keyword gluten free
Prep Time 5 minutes
Cook Time 20 minutes
Servings 2 cups
Calories 87 kcal
Author Erin Brighton


  • 1 large red onion thinly sliced
  • 1/2 c apple cider vinegar
  • 1/4 c white vinegar
  • 1/4 c water boiling
  • 2 T white sugar
  • 1 teaspoon salt


  1. Thinly slice your large red onion using a mandoline or a sharp knife.

  2. Place your sliced red onions in a mason jar so they are tightly packed.

  3. Whisk together boiling water, apple cider vinegar, and white or rice wine vinegar with the sugar and salt until the sugar is dissolved.

  4. If you are cooking on the stove, bring the mixture to a simmer. If you are using the microwave, microwave for about 1 to 2 minutes.

  5. Pour simmering mixture over the onions and make sure the onions are completely submerged.

  6. Let the onions sit for about 15 to 20 minutes before using them. After they cool, store in the refrigerator for up to 2 to 3 weeks.

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Erin Brighton

I am a native New Englander now living in beautiful Charlotte, North Carolina and enjoying summers in sea-breezy Scituate, Massachusetts with my five small kids and two large dogs. I love to cook easy, local, and gluten-free for friends and family.

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