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+ servings
Cucumber Onion Salad in a bowl.

Cucumber Onion Salad Recipe

Cucumber and Red Onion Salad with a vinegar dressing is an easy, low-calorie and tasty side dish you'll find yourself making again and again.
Course Salad
Cuisine American
Prep Time 15 minutes
Total Time 15 minutes
Servings 4 servings
Calories 12kcal


  • 2 cups cucumber, peeled and spiralized can also slice or chop, about 2 medium-sized cucumbers
  • ¼ cup red onion thinly sliced or diced
  • 2 Tablespoons seasoned rice vinegar
  • 1 teaspoon sesame seeds optional


  • Allow cut cucumber to drain in a colander for about 15 minutes and blot dry with a towel.
  • Discard loose and excess seeds.
  • Toss cucumber and red onion with seasoned rice vinegar.
  • If desired, toast sesame seeds by heating in non-stick pan for about 5 minutes or until sesame seeds begin to brown and are fragrant. Stir frequently.
  • Drain off excess liquid before serving.
  • Top with sesame seeds, if using.


  1. Cucumbers can be sliced or diced instead of spiralized.
  2. We used seasoned rice vinegar because it adds a touch of sweetness. However, unseasoned vinegar with no sugar is also an option. Add a pinch of your sweetener of choice if desired.
  3. Cucumbers are very watery. Once you have peeled and spiralized, sliced, or diced them, allow them to drain, 20 minutes is ideal.
  4. I sliced the red onion extremely thin using a mandolin to achieve a similar look and feel to the cucumber noodles. 
  5. Once everything is mixed together, drain off excess liquid before serving.
  6. Top with sesame seeds or chia seeds!
  7. Many add-ins will work well in this recipe including tomatoes, radishes and carrots.


Calories: 12kcal | Carbohydrates: 1g | Sodium: 1mg | Potassium: 90mg | Vitamin A: 50IU | Vitamin C: 2.1mg | Calcium: 14mg | Iron: 0.2mg