These Mexican Red Pickled Onions are one of my most loved recipes. It is so simple! Just 2 ingredients and ready in minutes. No cooking required and they go so well with most Mexican dishes – and so much more!
Before jumping to the recipe please note that the below information contains HOT TIPS for this recipe. We try and answer all your questions to guarantee a perfect keto recipe every time.
I know you are going to love my best red pickled onions recipe. This 2-ingredient recipe (plus seasoning) is incredibly tasty! The best bit is how surprisingly different the pickled red onions taste and they only take minutes to make!
Quick Pickled Red Onions
I have been making this recipe for years, decades even. These are a little different to the traditional British-style pickled onions recipe. They are quick and easy with no boiling or cooking required.
Quick pickled red onions are the perfect accompanying side dish for Mexican cuisine. But, not only that they team perfectly with all salads, burgers, eggs and more. I use them for all meals including breakfast dishes.
Why You Will LOVE this Onions Recipe
- It’s so tasty. These quick Mexican pickled red onions are far from the old pickled onions I ate as a kid. This is a no sugar low carb recipe.
- Quick and Easy. Just two main ingredients and all you need to do is slice, mix and chill them.
- NO cooking needed. This is a no-cook pickle recipe. Yay!
Scroll to the recipe card at the bottom for the quantity of ingredients used and the full detailed recipe for these quick pickled onions! Keep reading for more details on the ingredients, substitutes and step by step instructions on how to make them.
You really only need to ingredients in this super low carb and keto friendly onion recipe. This is a sugar free pickle recipe. Sugar or sweetener is just not needed for either the pickling process or flavour in this recipe.
Red onions – aka Spanish onions are perfect for this recipe. I use fresh red onions for pickling not frozen.
Lime juice – I prefer lime juice over apple cider vinegar for pickled onions. You can however use apple cider vinegar if you prefer. It does make the red onions more bitter and vinegary but if that is what you would prefer go for it. ACV will also lower the carbs a little.
Seasoning – salt flakes, black pepper or red pepper flakes are perfect for this quick pickle recipe.
How to Make Quick Pickled Onions
This recipe really is simple. My pickled onions are having no cooking required. We all love that, right?
Step 1. Peel and slice the red onions. Place into a glass bowl or directly into a mason jar to store them in.
Step 2. Cover with lime juice and seasoning. Mix to combine or pop the lid on the jar and shake to combine. Chill for 20-30 minutes before using our Southern Pickled Red Onions on your favourite tacos, burgers, salad or comfort food. Served here with our delicious Savoury Mince recipe.
Pickled Red Onion Variations
There are loads of easy ways to make simple onion pickles. For me this is the best pickled red onions because it is quickly. A true “quickle” recipe.
If you only have white or brown onion you can still make it. I would recommend adding a little sweetener as those onions are not so sweet in flavour.
Korean Pickled Onions – add a little soy or coconut aminos and chillies (to taste)
Asian Pickled Red Onions – swap the lime juice for rice wine vinegar. Add 1/2 teaspoon of finely minced ginger too. (These are super delicious).
Ranch Pickled Onions – Oh yeah baby! Add two teaspoons of our Ranch Seasoning and that is all you need! Maybe even add some sliced dill pickle for some extra yumminess!
Frequently Asked Questions
Yes and no. One cup of onion has approximately 13g net carbs. So moderation is key.
You can but I would recommend freezing the onions before pickling. While I use fresh red onions in this easy pickled onion recipe you can use frozen but fresh is so much better if you have them.
Sure thing! Use pickle juice or brine from any of your favourite pickles. Alternatively, use some apple cider vinegar or lemon juice in its place.
To calculate the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe by 8-10. The result will be the weight of one serving.
Nutritional values shown are guidelines only. They are for 1 serving using the ingredients listed.
Store in an airtight glass jar in the fridge for up to 10 days. Metal can be reactive to the acid in the lime. Add more onion to the pickle juice if needed as you use them.
Instead of lime you can substitute lemon juice or a pickle juice brine from any dill pickles or pickled chillies for added flavour.
The recipe card instructions contain the most basic of steps and list of ingredients. If you have any queries, questions or are unsure of substitutions, please scroll up to the blog post for more information.
Mexican pickled onions a little goes a long way. Remember that onion carbs can really stack up so use sparingly as a garnish and flavour boost to your meal.
Serving: 1serve | Calories: 9kcal | Carbohydrates: 3g | Protein: 1g | Fat: 1g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Sodium: 292mg | Potassium: 38mg | Fiber: 1g | Sugar: 1g | Vitamin A: 8IU | Vitamin C: 6mg | Calcium: 5mg | Iron: 1mg | Magnesium: 3mg | Net Carbs: 2g
Megan has been following a ketogenic diet since being diagnosed with insulin resistance in early 2017.