When I want to make a quick and easy side dish, especially in the Summer, I always turn to this zesty cucumber onion salad. This cucumber salad recipe comes together quickly and easily with just a few ingredients. Fresh cucumber and red onion slices are dressed simply in a homemade vinegar salad dressing. It’s a flavor combination that makes me think of beautiful weather, family get-togethers, and fun around the table.

close up on cucumber onion salad in a white bowl

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I have a neighbor that always brings over home grown cucumbers, and that leads to us sharing a plate of this delicious salad! All you need are fresh veggies and some pantry staples to make a simple vinegar dressing.

What’s in this Cucumber Onion Salad Recipe?

  • Cucumbers: Start with fresh, juicy cucumbers, cut into slices. A mandolin works really well for quick slicing. Thinner or thicker slices work, as do diced or cubed cucumbers. A chopped cucumber and onion salad is great too!
  • Red Onion: Red onion has a nice bite that “spices” this salad up. I like cutting them into half moons, but you can chop or dice onions if you prefer.
  • Apple Cider Vinegar: This is the base of my vinegar salad dressing. It’s tangy and slightly sweet, and less acidic than some other vinegars, which is perfect for a light salad.
  • Sugar: Add just a little bit of granulated sugar into the dressing for sweetness.
  • Water: Water fills out the dressing. No oil needed here!
overhead view of cucumber salad with red onions and vinegar dressing, on a white and blue serving plater
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Tips for Success

  • Most varieties of cucumbers in North America (English cucumbers and “garden cucumbers” are common) will be fine without peeling. But if you use a variety with thick or bumpy skin, feel free to gently peel them.
  • Generously sprinkle salt over the cucumber slices before tossing them into the salad. The salt will draw out extra water and moisture so that they don’t get watery or soggy. You can salt them in a colander to prevent too much salt from accumulating on the slices.
  • If the red onion flavor is overpowering, try soaking slices in water before adding them to the salad. I personally love a strong onion taste, but if my husband is eating it too, that’s my favorite trick!

How to Make Ahead and Store

I love that this quick and easy cucumber salad with vinegar dressing can be prepped and/or made ahead of time. 

  • Veggies: Slice cucumbers and onions ahead of time, and store them in airtight containers (separately) until ready to use. If you do this, I recommend salting the cucumbers so they don’t accumulate moisture. You can also go ahead and soak the onions if you want to cut their intensity.
  • Dressing: Combine the vinegar dressing ingredients in a jar as instructed in the recipe card. This can be kept in the fridge for up to 4-5 days. Just shake or stir before tossing into the salad.

Toss everything together when you’re ready to serve it.

fresh cucumber and red onion salad sprinkled with dill, on a serving plate

Serving Suggestions

This easy cucumber salad is one of my all-time favorite spring and summer salad recipes. I love to serve it for light lunches outside along with grilled chicken breast, garlic butter salmon, or grilled pork chops. It’s also a great side salad for Easter dinner, along with lamb or ham. It really pairs beautifully with so many dishes!

5-Star Review

“Easy to make crunchy Cucumber cold salad. Taste gets better with each day it marinates. Thank you for posting.” -Wendy

Recipe Card

Cucumber Onion Salad Recipe

4.64 from 1044 votes
Prep: 10 minutes
Total: 10 minutes
Servings: 8 people
Author: Becky Hardin
cucumber salad in a white bowl
Crisp cucumbers, red onions, and a homemade vinegar dressing make for a simple yet delicious salad! This cucumber onion salad recipe is on repeat all Summer long!
Step-by-step photos can be seen below the recipe card.
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Ingredients 

  • 2 cucumbers
  • 1 red onion sliced
  • cup apple cider vinegar
  • ¼ cup water
  • 1 tablespoon granulated sugar
  • 1 teaspoon fine sea salt
  • 1 teaspoon ground black pepper

Instructions 

  • Slice each cucumber in ¼-inch slices and add to a large bowl.
    2 cucumbers
    cutting cucumbers into thin slices on a wooden cutting board.
  • Add in the sliced red onion (sliced into half moons) and toss to combine.
    1 red onion
    Sliced cucumbers and red onion mixed in a glass bowl.
  • In a mason jar or small bowl, whisk together the apple cider vinegar, water, sugar, salt, and pepper.
    ⅓ cup apple cider vinegar, ¼ cup water, 1 tablespoon granulated sugar, 1 teaspoon fine sea salt, 1 teaspoon ground black pepper
    vinegar dressing with pepper in a glass bowl.
  • Pour the dressing mixture over the cucumber and onion and toss to fully coat/combine.
    close up of cucumber salad with vinegar dressing.
  • Keep in the fridge until ready to serve.

Video

Becky’s Tips

  • If you like, finish the salad with fresh dill or parsley.
  • If you have leftover cucumbers, try making little cucumber sandwiches. You can also add slices to water for a refreshing and healthy beverage.
Storage: Store leftover salad covered in the refrigerator for up to 3 days. You can make and store the dressing separately up to 5 days.
Serving: 1servingCalories: 23kcalCarbohydrates: 5gProtein: 1gFat: 1gSaturated Fat: 1gSodium: 294mgPotassium: 129mgFiber: 1gSugar: 3gVitamin A: 54IUVitamin C: 3mgCalcium: 14mgIron: 1mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Did you make this? Leave a comment!

How to Make Cucumber Onion Salad Step by Step

Slice the Cucumbers: Slice 2 cucumbers into ¼-inch slices and add to a large bowl.

cutting cucumbers into thin slices on a wooden cutting board.

Add the Onions: Add in 1 red onion sliced into half moons and toss to combine.

Sliced cucumbers and red onion mixed in a glass bowl.

Make the Dressing: In a mason jar or small bowl, whisk together ⅓ cup of apple cider vinegar, ¼ cup of water, 1 tablespoon of granulated sugar, 1 teaspoon of fine sea salt, and 1 teaspoon of ground black pepper.

vinegar dressing with pepper in a glass bowl.

Toss the Salad: Pour the dressing mixture over the cucumber and onion and toss to fully coat/combine. Keep in the fridge until ready to serve.

close up of cucumber salad with vinegar dressing.

More Salad Recipes To Try

Meet Becky Hardin

Becky Hardin is a wife and mother living in Saint Louis Missouri. She founded The Cookie Rookie in 2012 as a creative way to share recipes. Now, she is a trusted resource for easy cooking around the world, being featured in Taste of Home, The Kitchn, ABC’s Home and Family, and more. Here at The Cookie Rookie she is the editor in chief of all recipes and continues to enjoy sharing her passion for cooking for busy families. She has since founded two additional food blogs, Easy Chicken Recipes and Easy Dessert Recipes.

4.64 from 1044 votes (983 ratings without comment)
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127 Comments
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E P
E P
July 22, 2023 5:17 pm

They have not even marinated and they are super tasty! Thank you for sharing your journey.
I am also mostly a noncooker… It can be difficult to put everything together at the same time.4 stars

Loretta Massey
Loretta Massey
July 2, 2023 6:33 pm

The is the very recipe I was looking for! I’m so glad I live in this day and age when information is so easy to come by.5 stars

IMG_2935.jpeg
Samantha Marceau
July 3, 2023 9:34 am
Reply to  Loretta Massey

Thanks so much for stopping by, Loretta!

Carol Quick
Carol Quick
June 18, 2023 10:00 am

Sounds like it will be a good recipe. Thanks!!!!!5 stars

Samantha Marceau
June 19, 2023 9:28 am
Reply to  Carol Quick

We hope you love it, Carol!

Mary Beth
Mary Beth
June 12, 2023 9:39 am

I’m making this for lunch today for about the 10th time. This is a fantastic recipe now in my regular lunchtime favorites rotation. Thank you!5 stars

Debby Evoy
Debby Evoy
June 6, 2023 9:25 pm

I liked the salad but I like it to be vinegar forward so I added more vinegar. Next time I will use half the water.4 stars

Samantha Marceau
June 7, 2023 9:03 am
Reply to  Debby Evoy

Thanks for sharing what worked for you, Debby!

Samantha Marceau
June 1, 2023 9:15 am

Pepper is definitely an ingredient that is up to personal taste! Feel free to reduce the amount!

Samantha Marceau
May 26, 2023 9:32 am

We’re so sorry to hear that, Lee! There are ads, but they shouldn’t cover the recipe!

Nan
Nan
May 9, 2023 10:31 am

The recipe in my collection used 1/2 cup sugar. My partner is diabetic so looking for a recipe with less . Your recipe delicious. Thank you!5 stars

LCortez
LCortez
May 7, 2023 7:45 pm

Thank you! My wife usually makes this for us, but she wasn’t home so I google a recipe. Super simple, easy, and my 3 year old ate a whole cucumber by himself.5 stars

Christine Klassen
Christine Klassen
March 19, 2023 9:26 pm

My family loved this as a side dish to hamburgers. Yum!5 stars