Quick pickled onions are so easy to make and crazy flavorful! All you need is 5 simple ingredients and 10 minutes of time - no canning required! They are a staple in our home. I always keep a jar or two easily accessible in the fridge. Quick pickled onions add so much flavor to your favorite foods - every kind of taco, burgers, brats, grain bowls and more!
Pack the thinly sliced red onion into a pint size jar.
In a small saucepan, heat together the vinegar, water, salt and sugar over medium-high heat until lightly boiling to dissolve salt and sugar, about 4-5 minutes. Pour the hot pickling liquid over the onions and close the jar.
Let cool to room temperature. Although you can eat the onions once they have cooled, I recommend letting them pickle for 24 hours first. Once the onions have cooled, leave them in the pickling liquid with the jar closed and store in the refrigerator.
Notes
How long can you store pickled onions: I personally have store pickled onions in the refrigerator for 3-4 months, and I have never had any issues. But, use your best judgement. If, for some reason, you see mold in the jar or if the onions start to get really soft and mushy, then it's time to toss them.