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Easy Pickled Red Onions

Published: Mar 25, 2022 · Modified: Apr 11, 2025 by theslottedspoons · This post may contain affiliate links · Leave a Comment

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Easy Pickled Red Onions are hands down one of the best spring/summer condiments to have on hand. You can put them on sandwiches, or tacos, or chop them in salads! I make a couple of jars at the start of spring so I have plenty on hand for fresh summer dishes!

Three glass jars with sliced red onions.

Making Pickled Onions

The recipe for making pickled onions is so simple and easy, and the best part is it can be customizable by adding extra spices.

Here's what you will need:

  • A clean 1-litre pickled jar with a lid
  • Red Onions
  • Apple Cider Vinegar
  • Water
  • Salt
  • Sugar

Top view of pickled onions in a jar with chilli flakes on to

I like to make a batch with red chilli flakes for a spicy kick!

Whenever I make pickled onions, I tend to let them sit in the refrigerator for a day or two before I use them. I find doing that allows the onions to soften and absorb the vinegar.

Easy Pickled Red Onions

Zainab Jabri
Pickled Onions have never been so easy! Sandwiches, salads, and tacos can be elevated by adding pickled onions. I always like to have these on hand! I even like to add chilli flakes to give them a spicy kick.
5 from 1 vote
Print Recipe Pin Recipe
Prep Time 1 minute min
Cook Time 5 minutes mins
Course Brunch, Lunch
Cuisine Vegetarian
Servings 1 Jar

Equipment

  • 1L Glass Jar with Lid

Ingredients
  

  • 2 Large Red Onions Sliced
  • 1 cup Apple Cider Vinegar or White Vinegar
  • 2 cups Water
  • 2 tablespoon Granulated Sugar
  • 3 teaspoon Sea Salt
  • ½ teaspoon Red Chilli Flakes Optional

Instructions
 

  • Slice the red onions into thin slices. I like to slice them into full rounds, but you can also slice the onion in half to create a flat surface.
  • Add the onion slices into the clean jar. Pack in the onions tight.
  • In a small saucepan, add the water, vinegar, salt, and sugar. Heat on low until the sugar and salt have dissolved.
  • Pour the warm liquid over the onions in the jar. Use a skewer to poke through the jar to help remove air bubbles.
  • Place the lid on the jar and allow it to cool before placing it in the fridge.
  • For best results, leave the jar unopened for 2 days before consuming.
  • Keep in the fridge, keep well for up to a month.
Keyword easy pickled onion, pickled onions, pickling, red onions, salads, tacos
Tried this recipe?Leave a comment below and tag @theslottedspoons on social!

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Hi! I'm Zainab

I'm a food photographer, recipe developer, and home barista. I share simple, flavourful recipes and creative coffee drinks, all with beautiful food photography tips. Let’s make something delicious!

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