Cucumber Tomato Onion Salad

Description

Cucumber Tomato Onion Salad is a simple, fresh, and colorful side dish made with crisp cucumbers, juicy tomatoes, thinly sliced red onion, fresh herbs, and a bright homemade dressing. It comes together in just a few minutes and is perfect for summer lunches, BBQs, picnics, potlucks, family dinners, or meal prep.

The combination of crunchy cucumber, sweet and juicy tomatoes, and slightly sharp onion creates a refreshing contrast. A simple dressing made with extra-virgin olive oil, vinegar, lemon juice, garlic, and herbs gives the salad a delicious Mediterranean-inspired flavor without making it heavy.

This salad is naturally vegetarian and can easily be made vegan. It is also a wonderful base recipe because you can add feta, olives, chickpeas, avocado, bell peppers, or fresh herbs depending on what you have available.

Prep Time: 15 minutes
Cook Time: 0 minutes
Total Time: 15–20 minutes
Servings: 6
Course: Salad / Side Dish
Cuisine: Mediterranean-inspired
Difficulty: Easy

Ingredients

For the Salad

• 3 large cucumbers
• 4 medium ripe tomatoes
• 1 small red onion
• ¼ cup fresh parsley, chopped
• 2 tablespoons fresh dill, chopped, optional
• ½ cup crumbled feta cheese, optional
• ¼ cup Kalamata olives, optional

For the Dressing

• ¼ cup extra-virgin olive oil
• 2 tablespoons red wine vinegar
• 1 tablespoon fresh lemon juice
• 1 small garlic clove, finely minced
• ½ teaspoon dried oregano
• ½ teaspoon salt
• ¼ teaspoon freshly ground black pepper
• ½ teaspoon honey or maple syrup, optional

Instructions

1. Prepare the Cucumbers

Wash the cucumbers thoroughly and pat them dry.

You can peel them completely, partially peel them, or leave the skin on. Leaving the skin on gives the salad extra color and texture.

Slice the cucumbers into thin rounds or half-moons. If using very large cucumbers with many seeds, you can scoop out some of the seeds before slicing. This helps prevent excess liquid from collecting at the bottom of the salad.

Place the sliced cucumbers into a large mixing bowl.

2. Prepare the Tomatoes

Wash and dry the tomatoes.

Cut them into wedges or bite-sized chunks.

If your tomatoes are especially juicy, gently remove some of the seeds and excess liquid. This isn’t necessary, but it can help keep the finished salad from becoming watery.

For the best flavor, use ripe tomatoes that are sweet and flavorful.

Cherry or grape tomatoes are also excellent. Simply cut them in half.

3. Slice the Onion

Peel the red onion and slice it very thinly.

Red onion provides a slightly sharp, savory flavor that balances the sweetness of the tomatoes.

If you prefer a milder onion flavor, place the sliced onion in a bowl of cold water for approximately 5–10 minutes. Drain and pat dry before adding it to the salad.

4. Combine the Vegetables

Add the cucumbers, tomatoes, and red onion to a large serving bowl.

Add the chopped parsley and dill if using.

If you’re making a Mediterranean-style variation, add Kalamata olives and crumbled feta at this stage.

Gently toss everything together.

5. Make the Dressing

In a small bowl or jar, combine olive oil, red wine vinegar, lemon juice, garlic, oregano, salt, and black pepper.

Add honey or maple syrup if you prefer a slightly balanced, sweet-tangy dressing.

Whisk vigorously until the ingredients are well combined.

Taste the dressing and adjust the seasoning according to your preference.

For a more acidic dressing, add another teaspoon of vinegar or lemon juice.

For a softer flavor, add a little more olive oil.

6. Dress the Salad

Pour the dressing over the vegetables.

Gently toss using salad spoons.

Don’t overmix because tomatoes can become bruised and release too much liquid.

Allow the salad to rest for approximately 10–15 minutes before serving. This gives the vegetables time to absorb the dressing and allows the flavors to develop.

Serve immediately or refrigerate until ready to eat.

Notes

Choose Fresh Vegetables

Because this recipe contains only a handful of ingredients, the quality of the vegetables makes a big difference.

Choose firm, crisp cucumbers and ripe, flavorful tomatoes.

English Cucumbers

English cucumbers are particularly convenient because they have thin skin and fewer seeds. They also tend to remain crisp in salads.

Onion Options

Red onion is the classic choice, but sweet onion, white onion, or shallots can also be used.

Tomato Options

Roma tomatoes, vine-ripened tomatoes, heirloom tomatoes, cherry tomatoes, and grape tomatoes can all work.

Vinegar

Red wine vinegar provides a Mediterranean-style flavor, but apple cider vinegar or white wine vinegar can also be used.

Herbs

Parsley provides a fresh, clean flavor. Dill gives the salad a more refreshing, slightly grassy taste.

Fresh basil is another excellent option.

Tips for the Best Cucumber Tomato Onion Salad

1. Don’t Make It Too Far Ahead

For the freshest texture, prepare the salad shortly before serving.

Cucumbers and tomatoes naturally release water after being cut and salted.

2. Salt Carefully

Salt draws moisture from vegetables. If you are preparing the salad several hours ahead, consider adding some of the salt shortly before serving.

3. Use Good Olive Oil

Since olive oil is an important part of the dressing, a good-quality extra-virgin olive oil can noticeably improve the flavor.

4. Balance the Acidity

Vinegar and lemon juice provide acidity, while olive oil softens it. Taste the dressing before adding it to the vegetables.

5. Add Feta at the End

If using feta, add it after tossing the vegetables so the cheese maintains its texture.

6. Chill Briefly

A short period in the refrigerator can make the salad especially refreshing.

However, don’t leave it refrigerated for too long if you want maximum crunch.

7. Cut Everything Similar in Size

Similar-sized pieces make every bite more balanced and improve presentation.

Mediterranean Variation

Turn this simple salad into a more substantial Mediterranean-style dish by adding:

• ½ cup Kalamata olives
• ½ cup crumbled feta
• ½ cup chickpeas
• Fresh parsley
• Fresh oregano
• Bell pepper
• A little lemon zest

You can also serve it alongside grilled chicken, fish, shrimp, or warm pita bread.

How to Make It More Filling

Although cucumber tomato salad is primarily a vegetable side dish, it can easily become a complete light meal.

Add chickpeas or white beans for plant-based protein and fiber.

For a higher-protein version, add grilled chicken, tuna, boiled eggs, shrimp, or feta.

You can also serve the salad over cooked quinoa or couscous.

Another delicious option is to spoon it into a whole-grain pita with hummus.

Storage

Store leftovers in an airtight container in the refrigerator.

The salad is best eaten within 1–2 days because the cucumbers and tomatoes gradually become softer and release additional liquid.

If you know you will have leftovers, store the vegetables and dressing separately whenever possible.

This keeps the vegetables significantly crisper.

If the stored salad has released liquid, simply drain some of the excess liquid and refresh it with a small squeeze of lemon juice and a drizzle of olive oil.

Make-Ahead Instructions

For parties or meal preparation, prepare the ingredients separately.

Slice the cucumbers, tomatoes, and onions and store them in separate containers.

Prepare the dressing in a jar and refrigerate it.

When ready to serve, combine the vegetables, shake the dressing well, and toss everything together.

Add feta and fresh herbs immediately before serving.

This method provides much better texture than dressing the salad several hours in advance.

Serving Suggestions

Cucumber Tomato Onion Salad pairs beautifully with many meals.

Grilled Chicken

Serve it next to grilled chicken breasts, chicken skewers, or chicken thighs.

Fish

The fresh acidity works particularly well with grilled or baked salmon, cod, or white fish.

Mediterranean Dinner

Serve with hummus, warm pita, olives, feta, and grilled vegetables.

BBQ

The crisp vegetables provide a refreshing contrast to grilled meats and rich barbecue dishes.

Sandwiches

Serve alongside burgers, wraps, gyros, grilled cheese, or sandwiches.

Picnic

Transport the vegetables and dressing separately and combine them just before serving.

Servings

This recipe makes approximately 6 servings as a side dish.

Serving size: About 1 cup.

For a main meal, the recipe serves approximately 3–4 people when combined with chickpeas, feta, grilled chicken, or another protein.

Approximate Nutritional Information

Estimated per serving without optional feta and olives:

• Calories: 125–145 kcal
• Protein: 2 g
• Carbohydrates: 9–11 g
• Dietary Fiber: 2–3 g
• Total Fat: 10–11 g
• Saturated Fat: 1–2 g
• Sugar: 5–7 g
• Sodium: 200–300 mg
• Potassium: 350–450 mg

The exact nutrition will vary depending on the size of the vegetables, amount of olive oil, and other ingredients used.

Adding feta or olives will increase calories, fat, and sodium.

Adding chickpeas will increase protein, carbohydrates, fiber, and calories.

Benefits of Cucumber Tomato Onion Salad

1. Vegetable-Rich

The salad combines several fresh vegetables in one dish. Tomatoes provide vitamin C and carotenoid compounds, while cucumbers contribute water and a refreshing crunch.

2. Provides Fiber

Cucumbers, tomatoes, onions, and herbs provide dietary fiber, which contributes to healthy digestion and helps make meals more satisfying.

3. Contains Healthy Fats

Extra-virgin olive oil provides predominantly unsaturated fats and is a staple ingredient in Mediterranean-style eating patterns.

4. Hydrating

Cucumbers and tomatoes naturally contain a high amount of water, making this salad particularly refreshing during warm weather.

5. Low in Calories

The vegetable base is relatively low in calories, making this an easy way to add volume and freshness to a meal.

6. Antioxidant-Rich Ingredients

Tomatoes, onions, herbs, and olive oil contribute various plant compounds with antioxidant properties.

7. Easy to Customize

You can add beans, feta, olives, avocado, grains, or lean protein depending on your nutritional needs.

8. Naturally Vegetarian

The basic recipe contains no meat or seafood. It can also be made completely vegan by leaving out feta and using maple syrup instead of honey.

Frequently Asked Questions

Q1: Can I make this salad ahead of time?

Yes, but for the best texture, keep the dressing separate and combine it shortly before serving.

Q2: Why does my salad become watery?

Cucumbers and tomatoes naturally release water after being cut. Salting them heavily or dressing them too far in advance can increase this effect.

Q3: Should I peel the cucumbers?

It’s completely optional. English cucumbers generally don’t need peeling.

Q4: Can I use cherry tomatoes?

Absolutely. Cherry tomatoes are sweet, colorful, and hold their shape well.

Q5: Can I use white onion?

Yes. Red onion provides beautiful color, but white, yellow, sweet onions, or shallots can be substituted.

Q6: Can I add feta?

Yes. Feta adds creamy, salty flavor and makes the salad more substantial.

Q7: Is this salad vegan?

Yes, if you omit feta and use maple syrup instead of honey.

Q8: Is this recipe gluten-free?

Yes. The basic ingredients are naturally gluten-free. Always check packaged ingredients if strict gluten avoidance is required.

Q9: Can I add avocado?

Yes. Add diced avocado immediately before serving because it can brown and soften quickly.

Q10: Can I add chickpeas?

Definitely. Chickpeas turn this simple side salad into a more filling vegetarian meal.

Q11: What herbs work best?

Parsley, dill, basil, cilantro, and fresh oregano all work well. Parsley and dill are especially refreshing.

Q12: What dressing can I use instead?

A simple balsamic vinaigrette, Greek dressing, lemon-herb dressing, or red wine vinaigrette can all work.

Q13: Can I use apple cider vinegar?

Yes. It provides a slightly sweeter and fruitier acidity.

Q14: Can I make it spicy?

Yes. Add crushed red pepper flakes, finely chopped jalapeño, or a pinch of cayenne.

Q15: Can I add lettuce?

Yes. Romaine or mixed greens can turn this into a larger green salad.

Q16: Can I add olives?

Yes. Kalamata olives are especially delicious and add a salty Mediterranean flavor.

Q17: Can I serve this with pasta?

Absolutely. Add cooked orzo, bow-tie pasta, or another small pasta shape to create a heartier pasta salad.

Q18: How long does it last in the refrigerator?

For the best texture, consume it within 1–2 days. Keep the dressing separate if possible.

Q19: Can I use bottled lemon juice?

Fresh lemon juice is recommended because it has a brighter flavor, but bottled lemon juice can work when fresh lemons aren’t available.

Q20: What makes this salad so refreshing?

The combination of crisp cucumber, juicy tomatoes, fresh herbs, and acidic dressing creates a light and refreshing flavor profile, especially when served chilled