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    Home » Recipe Index » Vegetables

    Spicy Pickled Onions

    April 3, 2022 Updated April 19, 2024 By Rebecca Clyde MS, RDN, CD Cooking for One, Easy Recipes, Prep Ahead Meals, Side Dishes, Vegetables

    Jump to Recipe
    jar of pickled onions and jalapenos

    Quickly make spicy pickled onions to top burritos, tacos, taco salad/burrito bowls, sandwiches, and so many other foods. They're bursting with flavor, come together quickly, and are a great way to use up leftover onions.

    jar of pickled onions and jalapenos

    [This recipe was originally posted in April 2022. It has been updated with cooking instructions, storage tips and substitutions, FAQ, related recipes and ways to repurpose/use up ingredients]

    Table of contents

    • Ingredients
    • Instructions
    • Recipes to add your onions to
    • Storage Tips
    • Substitutions/Tips
    • FAQ
    • What to do with leftover ingredients

    Pickling vegetables is a great way to add lots of flavor to a vegetable to make it more exciting to eat. This easy flavor adding preservation method makes life better AND easier.

    Add these spicy pickled onions to dinner will add lots of flavor and excitement without much effort. Plus they last a few weeks, sealed, in the fridge so you don't have to eat them quickly. BONUS: No canning equipment required.

    You can add them to so many dishes like: salads, grain bowls, burrito bowls, tacos, burritos, soups, sandwiches, etc. The options are endless.

    Try these easy Dill Pickled Carrots too!

    Ingredients

    Scroll down to the spicy pickled onions recipe card for the amounts of each ingredient, but here's a quick visual + description of what's in this recipe.

    pickled onion ingredients on cutting board
    • Red onion: red onions turn a pretty pink color, but any type of onion will taste great after being pickled.
    • Jalapeno: Add a jalapeno (or other pepper) to make spicy pickled onions. Red pepper flakes would also work.
    • White vinegar: This is to give your pickled onions the pickled flavor. It doesn't ferment, but this method is quicker, and is so tasty!
    • Water
    • Salt: this adds lots of flavor, and helps preserve your onions.
    • Sugar: Adds flavor too

    Instructions

    Scroll down to the spicy pickled onions recipe card for more detailed instructions. Here's a quick overview + photos to see how to make this recipe in general.

    pickling liquid in glass jar

    1. To start making your spicy pickled onions, add equal parts of white vinegar and water to a microwave safe glass jar/bowl, add sugar and salt. Cover with microwave safe lid, microwave for 60-90 seconds.

    2. Stir. Heat until sugar and salt have dissolved.

    sliced red onion on cutting board

    3. While your liquid is heating up, thinly slice 1 medium red onion, and ½-1 jalapeno pepper. Remove jalapeno center and seeds for less spicy, spicy pickled onions.

    sliced onions in glass jar

    4. Once water/vinegar mixture is warmed, sugar and salt have been dissolved, add thinly sliced onions and jalapeno. Press under liquid. Seal jar and refrigerate until use.

    5. Remove your spicy pickled onions with a fork to keep the liquid and onions clean.

    6. I recommend refrigerating your spicy pickled onions for 24+ hours before enjoying, but you can eat them after just 30-60 minutes. They get better with time, and can be refrigerated for up to 3 weeks.

    Recipes to add your onions to

    • Pantry Rice and Bean Soup
    • Turkey Pumpkin Chili
    • Easy Huevos Rancheros
    • Delicata Squash Soup
    • Black Bean Pasta
    • Buffalo Chicken Flatbread
    • Brisket Grilled Cheese

    Storage Tips

    Store spicy pickled onions in an airtight container in the fridge. They should last a couple weeks. Just smell them before eating. If they smell and look good, they're most likely good to eat!

    Substitutions/Tips

    • You can substitute the red onions for other types of onions to make these spicy pickled onions. The red onion has a nice sweet flavor and turns a really pretty pink color. But you can use whatever onions you have on hand.
    • You can use ½ white vinegar and ½ apple cider vinegar (ACV), or even swap a Tablespoon of white vinegar for ACV for slightly less of a bite.
    • Ways to adjust spiciness: Adjust how much jalapeno you add, remove center ribs and center endocarp that seeds are attached to cut down on spiciness, add additional peppers or red pepper flakes to make it spicier.
    • Omit the jalapeno peppers for regular pickled onions.
    • Other great add-ins: clove of garlic, pinch of red pepper flakes (a good option if you don't have a jalapeno), other types of peppers are great added to spicy pickled onions.

    FAQ

    How to make pickled onions

    Pickled onions and spicy pickled onions, like this recipe are easy. The basic recipe is to dissolve sugar and salt in a vinegar/water mixture. Thinly slice onions and add them to the pickling liquid you made. Cover completely.

    Refrigerate for at least 30 minutes, but they're better after sitting for longer. They'll last a couple weeks, especially if you use a clean fork to remove them from the pickling liquid.

    Are pickled onions healthy?

    Instead of worrying about the health benefits of particular foods, I recommend eating a variety of foods and getting creative with nutrient packed fruits and vegetables. Pickled onions add lots of flavor to food.

    What spices for pickled onions?

    There are lots of spices you can add to pickled onions. They're great with just sugar and salt, fresh peppers, dill, pickling spices, and other flavorings.

    fork with pickled onions and jar of pickled onions

    What to do with leftover ingredients

    When you're cooking for one, you often have leftover produce, cans of whatever ingredient, etc. Here are a couple ideas on how to use up the leftover ingredients. It'll help you save money by wasting fewer ingredients.

    • Red Onions and Jalapeno: Vegetarian Burrito Bowl, Refried Bean Tacos, Breakfast Tacos, and Chorizo Breakfast Casserole (you can also add your spicy pickled onions to these recipes).

    Did you make these spicy pickled onions? Leave me a comment & rating to share how they turned out!

    square image of pink pickled onions with fork

    Spicy Pickled Onions

    Quickly make these spicy pickled onions to top burritos, tacos, taco salad/burrito bowls, sandwiches, and so many other foods. They're bursting with flavor, come together quickly, and are a great way to use up leftover onions.
    5 from 5 votes
    Print Pin Rate
    Course: Side Dish, Topping
    Cuisine: American, Mexican
    Prep Time: 10 minutes minutes
    Cook Time: 5 minutes minutes
    Total Time: 15 minutes minutes
    Servings: 16 ounces
    Author: Rebecca Clyde MS, RDN

    Equipment

    • 16 oz Glass Jar or similar sized container with lid that seals
    • Measuring cups and spoons
    • Microwave safe cover for jar
    • knife
    • cutting board

    Ingredients

    • ½ cup water
    • ½ cup white vinegar
    • 1 Tablespoon granulated sugar
    • 1 ½ teaspoon fine salt
    • 1 medium red onion
    • 1 jalapeno pepper

    Instructions

    • Add ½ cup water, ½ cup white vinegar, 1 Tablespoon sugar, 1 ½ teaspoon fine salt to a glass jar or microwave safe bowl. Cover with microwave safe cover and microwave for 60-90 seconds. Stir and cook until all sugar and salt dissolves.
    • While liquid is heating, thinly slice red onion and jalapeno pepper.
    • Add onion and pepper to liquid, press under liquid. Close lid, and refrigerate for at least 30 minutes, but for best results, refrigerate for 24 hours before enjoying these spicy pickled onions.
    • Remove with a fork to keep onions and liquid clean. Can refrigerate in a sealed container for up to 3 weeks.

    Notes

    • Substitute the red onions for other types of onions to make these spicy pickled onions. Use whatever onions you have on hand.
    • Replace some of the white vinegar for apple cider vinegar for slightly less of a bite.
    • Ways to adjust spiciness: Adjust how much jalapeno you add, remove center ribs and center endocarp that seeds are attached to cut down on spiciness, add additional peppers or red pepper flakes to make it spicier.
    • Other great add-ins: garlic clove, pinch of red pepper flakes (a good option if you don't have a jalapeno), other types of peppers.
    Tried this Recipe? Pin it Today!Mention @NourishNutriCo or tag #NourishNutriCo!

    Want time saving tips to make recipes like this spicy pickled onions delivered to your inbox? Click here to download my Cooking for One Time Saving Tips.

    Recipes are great, but you’ll need a simple 3 step process to create a meal plan that make cooking easy & helps you stop wasting food. Check out this expertly developed meal planning guide to get started. 

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    About Rebecca Clyde MS, RDN, CD

    Welcome! I’m Rebecca, a food loving dietitian who has been cooking for one for over 10 years. On Nourish Nutrition, you’ll find real, quick, and nourishing recipes for one that'll get you to want to cook for yourself, because you deserve it.

    Reader Interactions

    Comments

    1. Mirlene says

      April 05, 2022 at 4:17 pm

      5 stars
      I love making these pickled onions! Such a great taste and I added more jalapenos to pickle them too! It's great in burgers!

      Reply
      • Rebecca says

        April 05, 2022 at 6:38 pm

        yes! the jalapenos are so good

        Reply
    2. Keri Bevan says

      April 05, 2022 at 3:55 pm

      5 stars
      These are such a delicious addition to tacos and salads. Great recipe! Thanks so much!

      Reply
      • Rebecca says

        April 05, 2022 at 6:38 pm

        they're so good!

        Reply
    3. Anita says

      April 05, 2022 at 3:26 pm

      5 stars
      Such a simple recipe but the flavors are awesome. Also, best to let the pickle sit for a day and not rushing to enjoy it. 🙂

      Reply
      • Rebecca says

        April 05, 2022 at 6:39 pm

        agreed! they're much better after 1-2 days.

        Reply
    4. MJ says

      April 05, 2022 at 2:49 pm

      5 stars
      I love how simple this was to make. Will definitely be making it again for our tacos, and for burger cookouts during the summer!

      Reply
      • Rebecca says

        April 05, 2022 at 6:39 pm

        they're so good on both. enjoy.

        Reply
    5. Tayler Ross says

      April 05, 2022 at 2:29 pm

      5 stars
      I made these pickled onions the other day and was able to enjoy them today. They were flavorful and so delicious!

      Reply
      • Rebecca says

        April 05, 2022 at 6:39 pm

        great to hear!

        Reply
    5 from 5 votes

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