This refreshing tomato cucumber onion salad is a perfect side dish for any meal. It's light, crisp, and bursting with fresh flavors, making it an ideal choice for a summer gathering or a quick weeknight dinner. The combination of juicy tomatoes, crunchy cucumbers, and sharp red onions creates a delightful medley that is both satisfying and nutritious.
If you don't usually keep red wine vinegar in your pantry, you might need to pick some up at the supermarket. This ingredient adds a tangy depth to the salad that balances the sweetness of the tomatoes and the crispness of the cucumbers. Make sure to also grab some high-quality olive oil to enhance the overall flavor of the dish.

Ingredients For Tomato Cucumber Onion Salad Recipe
Tomatoes: Fresh and juicy, they form the base of the salad and add a burst of sweetness.
Cucumber: Adds a refreshing crunch and a mild flavor that complements the other ingredients.
Red onion: Provides a sharp, tangy taste that contrasts nicely with the other flavors.
Olive oil: A high-quality oil that adds richness and helps to meld the flavors together.
Red wine vinegar: Adds a tangy acidity that brightens the salad and balances the sweetness of the tomatoes.
Salt: Enhances the natural flavors of the vegetables and brings out their best.
Black pepper: Adds a hint of spice and depth to the salad.
Technique Tip for This Recipe
To enhance the flavor of your tomato cucumber onion salad, consider marinating the red onion slices in the red wine vinegar for about 10 minutes before combining them with the other ingredients. This will help to mellow the sharpness of the onion and infuse it with a tangy flavor, adding a delightful depth to your salad.
Suggested Side Dishes
Alternative Ingredients
tomatoes - Substitute with red bell peppers: Red bell peppers provide a similar color and a sweet, juicy crunch that can mimic the texture of tomatoes.
cucumber - Substitute with zucchini: Zucchini has a similar texture and mild flavor, making it a good alternative to cucumber.
red onion - Substitute with shallots: Shallots offer a milder, slightly sweeter flavor compared to red onions, which can be a pleasant variation in the salad.
olive oil - Substitute with avocado oil: Avocado oil has a similar healthy fat profile and a mild flavor that works well in salads.
red wine vinegar - Substitute with apple cider vinegar: Apple cider vinegar has a tangy flavor that can effectively replace red wine vinegar in dressings.
salt - Substitute with soy sauce: Soy sauce can add a salty and umami flavor, providing a different but interesting twist to the salad.
black pepper - Substitute with white pepper: White pepper offers a similar heat but with a slightly different flavor profile, which can add a subtle complexity to the salad.
Other Alternative Recipes Similar to This Salad
How to Store or Freeze This Salad
- To store your tomato cucumber onion salad, transfer it to an airtight container. This will help maintain its freshness and prevent any unwanted odors from seeping in.
- Place the container in the refrigerator. The salad will stay fresh for up to 2 days. Beyond this, the tomatoes and cucumbers may start to release too much water, making the salad soggy.
- If you plan to make the salad ahead of time, consider storing the dressing separately. Combine the olive oil and red wine vinegar in a small jar and refrigerate. Add the dressing to the salad just before serving to keep the vegetables crisp.
- For a quick refresh, give the salad a gentle toss before serving. This will redistribute the seasonings and ensure every bite is flavorful.
- Freezing this salad is not recommended. The high water content in tomatoes and cucumbers causes them to become mushy when thawed, compromising the texture and overall quality of the dish.
- If you have leftover salad that you don't want to waste, consider blending it into a gazpacho or using it as a topping for grilled meats or fish. This way, you can enjoy the flavors without worrying about the texture changes from refrigeration.
How to Reheat Leftovers
- While Tomato Cucumber Onion Salad is best enjoyed fresh, if you must reheat it, consider these methods:
- Microwave Method: Place the salad in a microwave-safe dish. Heat on medium power for 30 seconds to 1 minute. Be cautious not to overheat as tomatoes and cucumbers can become mushy.
- Stovetop Method: Use a non-stick skillet over low heat. Add the salad and stir gently for 1-2 minutes. This method helps maintain the texture of the vegetables.
- Oven Method: Preheat your oven to 250°F (120°C). Spread the salad evenly on a baking sheet. Warm it for about 5-7 minutes. This method is gentle and helps retain the salad's crunch.
- Room Temperature Method: If you prefer not to heat the salad, let it sit at room temperature for about 15-20 minutes before serving. This can help take the chill off without compromising the texture.
Best Tools for This Recipe
Large mixing bowl: A spacious container to combine and mix the chopped tomatoes, sliced cucumber, and thinly sliced red onion.
Chef's knife: A sharp knife to chop the tomatoes and slice the cucumber and red onion with precision.
Cutting board: A sturdy surface to safely chop and slice the vegetables.
Measuring cups: Tools to accurately measure the quantities of tomatoes and cucumber.
Measuring spoons: Tools to measure the olive oil, red wine vinegar, salt, and black pepper.
Salad tongs: Utensils to toss the salad ingredients together evenly.
Refrigerator: An appliance to chill the salad if you prefer to serve it cold.
Serving bowl: A bowl to present the salad attractively when serving.
How to Save Time on Making This Salad
Pre-chop vegetables: Chop tomatoes, cucumbers, and red onions in advance and store them in airtight containers in the fridge.
Use a mandoline: Slice cucumbers and red onions quickly and uniformly with a mandoline slicer.
Pre-mix dressing: Combine olive oil and red wine vinegar in a jar and shake well. Store in the fridge for quick use.
Batch prep: Make a large batch of the salad and portion it out for multiple meals throughout the week.
Chill ingredients: Keep all ingredients chilled before mixing to save time on refrigeration.

Tomato Cucumber Onion Salad
Ingredients
Main Ingredients
- 2 cups Tomatoes, chopped
- 1 cup Cucumber, sliced
- 1 cup Red Onion, thinly sliced
- 2 tablespoon Olive Oil
- 1 tablespoon Red Wine Vinegar
- 1 teaspoon Salt
- 1 teaspoon Black Pepper
Instructions
- 1. In a large mixing bowl, combine the chopped tomatoes, sliced cucumber, and thinly sliced red onion.
- 2. Drizzle the olive oil and red wine vinegar over the vegetables.
- 3. Season with salt and black pepper. Toss everything together until well combined.
- 4. Serve immediately or chill in the refrigerator for 30 minutes before serving.
Nutritional Value
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