This Tomato Cucumber Onion Salad is a recipe staple for any summer day. It’s ready in less than 15 minutes and requires minimal ingredients, yet the result is a refreshing and utterly flavorful side dish to serve along grilled meats, fish and as a light meal.
Do you love an easy healthy salad and want more? Then try our Apple Walnut Salad or our Broccoli Salad.
Yes! It’s loaded with fresh vegetables, vitamins, antioxidants, and fiber, while being naturally low in calories. Using a simple olive oil vinaigrette adds heart-healthy fats and fresh flavor.
Why I Love This Recipe
- So easy to make
- Garden fresh or farmers’ market easy
- Perfect side for BBQ
- Great for weeknights or weekends too!
- Healthy and delicious
Helpful Items For This Recipe
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Ingredients to Make this Tomato Cucumber Onion Salad
Recipe Ingredients
Cherry tomatoes – Pick ripe tomatoes, as those will be the most flavorful and juicy.
Cucumber – Any type of cucumber will work in this salad, and leaving the peel on or off is optional; do what you like the most.
Red onion – Pick a small red onion and slice it thinly; it adds a nice sharpness to the salad, so I wouldn’t omit it. If you’re up for a milder onion flavor, put sliced onion under water for 30 minutes and then drain it well.
Fresh herbs – We love using basil, dill and parsley all together, but you can use the ones you have on hand.
Crumbled feta cheese – It provides a salty kick that combines great with the vegetables’ freshness.
Extra virgin olive oil – Use a good-quality olive oil in this recipe; it’s totally worth it.
Red wine vinegar – Vinegar is a must in any vinaigrette. You can swap with balsamic or apple cider vinegar if desired.
Dijon mustard – Mustard is key for the dressing. It adds a creamy texture and lots of flavor.
Salt and ground pepper – Add them to taste.
Dry oregano – An extra herbal hint in the dressing that complements mustard.
How to Make Cucumber Tomato Salad
Slice the cucumber into thin half-moons, thinly slice the red onion, and halve the cherry tomatoes. Add everything to a large serving bowl.
Add the chopped fresh herbs, then gently toss to combine.
In a small jar, add the olive oil, red wine vinegar, Dijon mustard, dried oregano, salt, and black pepper. Shake it until the dressing is well emulsified.
Place the salad in a serving dish and top with crumbled feta cheese, then pour the dressing over the salad and toss gently until all the vegetables are evenly coated.
Let the salad sit for 10–15 minutes before serving to allow the flavors to meld. Toss once more and adjust the seasoning with additional salt, pepper, or vinegar if needed. Serve chilled or at room temperature.
Recipe Pro Tips
How to Store Tomato Cucumber and Onion Salad
Storing this salad is not the best idea, as tomato and cucumber will get mushy when refrigerated. If you’d like to work in advance, slice the vegetables and keep them at room temperature for up to six hours. Then, incorporate the dressing up to one hour before serving.
What is the best dressing for Cucumber Tomato Onion Salad?
The ingredients in this salad are already flavorful due to the onion and fresh herbs. So the best dressing for us is something simple, tangy, and lightly creamy to enhance the natural taste and juiciness of tomato and cucumber.
WHAT TO SERVE THIS SALAD WITH?
We love a tomato salad like this one and make it often, as it goes with so many mains. Here are some of our favorites.
Pin it HERE!!
Pin it HERE!!
Tomato Cucumber Onion Salad
Ingredients
- 1 lb cherry tomatoes ripe
- 1 large cucumber
- 1 small red onion
- A handfull of fresh herbs basil, dill and parsley
- 1/2 cup crumbled feta cheese
Dressing
- 3 tbsp olive oil
- 1 tbsp red wine vinegar
- 1 tbsp Dijon mustard
- 1/2 tsp dry oregano
- Salt and ground pepper to taste
Instructions
- Slice the cucumber into thin half-moons, thinly slice the red onion, and halve the cherry tomatoes. Add everything to a large serving bowl.
- Add the chopped fresh herbs, then gently toss to combine.
- In a small jar, add the olive oil, red wine vinegar, Dijon mustard, dried oregano, salt, and black pepper. Shake it until the dressing is well emulsified.
- Place the salad in a serving dish and top with crumbled feta cheese, then pour the dressing over the salad and toss gently until all the vegetables are evenly coated.
- Let the salad sit for 10–15 minutes before serving to allow the flavors to meld. Toss once more and adjust the seasoning with additional salt, pepper, or vinegar if needed. Serve chilled or at room temperature.
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