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5 from 2 ratings

Whole30 Pickled Onions (Keto, Paleo)

This Whole30 Pickled Onions Recipe is a quick and delicious refrigerator keto + paleo pickled onion. Great on salads, meats, or sandwich wraps!
Prep Time5 mins
Total Time5 mins
Course: Side Dish
Cuisine: American
Servings: 1 /2 cup
Calories: 17
Author: Natalie


  • 1 small red onion sliced 1/8" thick (I like using my mandoline)
  • 1/2 cup red wine vinegar
  • 1 tablespoon olive oil
  • 1 teaspoon kosher salt


  • Place the sliced onions in a wide mouth pint mason jar.
  • In a measuring cup, combine the red wine vinegar, olive oil and kosher salt. Stir to combine.
  • Pour the red wine vinegar mixture over the onions, and cover with a lid.
  • Allow to marinate at room temperature on the counter for at least 8 hours.
  • Will keep refrigerated for at least 2 weeks.


Calories: 17 | Total Carbs: 3.8g | Protein: 0.4g | Fiber: 0.7g | Net Carbs: 3g