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Overhead photo of easy pickled onions garnished with parsley.

Easy Pickled Onions

These Pickled Onions are extremely flavorful and so easy to make in less than 10 minutes! Sweet, crispy, tangy and perfect for topping on sandwiches, tacos, salads, burgers and more! Naturally vegan, gluten-free, paleo, low carb, keto and Whole30 compliant.

Course Appetizer, How To, Side Dish
Cuisine American
Keyword easy pickled onions, pickled red onions, quick pickled onions
Prep Time 2 minutes
Cook Time 30 minutes
Resting Time 20 minutes
Total Time 52 minutes
Servings 5 people
Calories 39 kcal
Author Kelly


  • 1 onion peeled and thinly sliced
  • 3/4 cups apple cider vinegar
  • 1 teaspoon fine sea salt
  • 1 garlic clove , minced
  • 1 tablespoon maple syrup , or sugar-free sweetener, leave out for Whole30
  • 1 tablespoon parsley freshly chopped


  1. Peel and thinly slice an onion. Set aside.

  2. In a small saucepan, combine apple cider vinegar, salt, maple syrup or preferred sweetener, and garlic over medium heat. Bring to a gentle simmer.

  3. Remove from heat. Place the sliced onions in a medium-sized bowl, and pour the hot vinegar mixture over the onions.

  4. Add the freshly chopped parsley and stir the ingredients together. Set a timer for 15 minutes to let the onions marinate.

  5. After 15 minutes, stir the onions and let soak for additional 15 minutes.

Nutrition Facts
Easy Pickled Onions
Amount Per Serving (1 serving)
Calories 39 Calories from Fat 9
% Daily Value*
Fat 1g2%
Carbohydrates 8g3%
Fiber 1g4%
Sugar 6g7%
Protein 1g2%
* Nutrition facts are provided as a courtesy using the WPRM recipe calculator. It is best to make your own calculations to ensure accuracy. We expressly disclaim any and all liability of any kind with respect to any act or omission wholly or in part in reliance on anything contained in this website. Percent Daily Values are based on a 2000 calorie diet.