Marinated Cucumber, Tomato & Onion Salad

Marinated Cucumber, Tomato & Onion Salad Crisp cucumbers, juicy tomatoes, and thinly sliced onions come together in a tangy herb dressing in this easy Marinated Cucumber, Tomato & Onion Salad. It is a refreshing, colorful side dish made with everyday ingredients and very little preparation. A short rest in the refrigerator allows the vegetables to absorb the dressing while keeping their fresh flavor and satisfying crunch.

This homemade version is inspired by the salad in your photograph, with thick cucumber rounds, generous tomato pieces, and ribbons of onion coated in a glossy vinaigrette. Serve it alongside grilled chicken, baked fish, burgers, or your favorite family dinner. It is especially convenient when you want a vegetable side without turning on the stove.

Prep time: 15 minutes
Cook time: None
Marinating time: 30–60 minutes
Servings: 6 side-dish servings

Ingredients for Marinated Cucumber, Tomato & Onion Salad

2 large English cucumbers, approximately 600 g
4 medium ripe tomatoes, approximately 500 g
1 medium sweet or white onion, thinly sliced
¼ cup apple cider vinegar or white wine vinegar
3 tablespoons extra-virgin olive oil
1 tablespoon granulated sugar, or less to taste
1 teaspoon dried oregano
½ teaspoon fine salt, plus more to taste
½ teaspoon freshly ground black pepper2 tablespoons chopped fresh parsley

Instructions for Marinated Cucumber, Tomato & Onion Salad

1. Prepare the cucumbers

Wash the cucumbers thoroughly and trim off both ends. Slice them into rounds approximately ¼ inch thick. If the cucumbers are especially wide, cut them lengthwise first, then slice them into half-moons.

English cucumbers have thin skins, so peeling is optional. For the striped appearance shown in the photograph, remove alternating strips of peel with a vegetable peeler. This gives the salad an attractive finish while leaving some green skin for texture.

2. Cut the tomatoes

Wash the tomatoes and remove their cores. Cut them into medium wedges or generous bite-size pieces. Keep the pieces large enough to hold their shape when tossed.

Use ripe tomatoes that still feel reasonably firm. Very soft tomatoes can break down during marinating and make the dressing watery. Add the tomatoes and any juices released during cutting to a large mixing bowl.

3. Slice the onion

Peel the onion, cut it in half, and slice it into thin half-moons. Separate the slices with your fingers so they distribute evenly throughout the salad.

If you prefer a milder onion flavor, soak the slices in cold water for 10 minutes. Drain thoroughly and pat dry before adding them to the bowl. This optional step softens their sharp bite without removing all their character.

4. Make the dressing

In a small bowl or jar, combine the vinegar, olive oil, sugar, dried oregano, salt, and black pepper. Whisk well, or close the jar and shake until the ingredients are combined.

Taste a little dressing before adding it to the vegetables. It should taste tangy with a gentle sweetness. The vegetables will release moisture as they rest, which will soften the intensity of the dressing.

5. Combine the salad

Add the sliced cucumbers and onions to the tomatoes. Pour the dressing over the vegetables and sprinkle in the chopped parsley.

Using two large spoons, gently lift and turn the vegetables until everything is lightly coated. Avoid vigorous stirring, which can crush the tomato pieces. Scrape any seasoning from the bottom of the bowl back over the salad.

6. Marinate in the refrigerator

Cover the bowl and refrigerate for at least 30 minutes, preferably about one hour. Stir gently halfway through so the vegetables at the top also spend time in the dressing.

During this rest, the onions become slightly softer, the cucumbers absorb some acidity, and the tomato juices mingle with the vinaigrette. The result is a more rounded flavor than a freshly tossed salad.

7. Taste and serve

Give the salad one final gentle toss. Taste a cucumber slice and adjust the seasoning if needed. Add a small pinch of salt, a little more pepper, or a splash of vinegar according to your preference.

Transfer to a serving bowl with a slotted spoon if you prefer less liquid. Alternatively, serve it directly from the mixing bowl so everyone can spoon a little dressing over their portion.

Notes for Marinated Cucumber, Tomato & Onion Salad

Choosing cucumbers: English or Persian cucumbers work particularly well because their skins are tender and their seeds are relatively small. Regular garden cucumbers are also suitable; peel tough skins and scoop out oversized, watery seeds before slicing.

Choosing tomatoes: Roma tomatoes hold their shape well, while vine-ripened tomatoes offer plenty of juice and flavor. Cherry tomatoes are another good option. Replace the four medium tomatoes with approximately 3 cups of halved cherry tomatoes.

Understanding the marinade: A little liquid collecting at the bottom is normal. Salt draws moisture from the vegetables, creating a light, flavorful mixture with the dressing. This is a marinated salad, so some extra liquid is expected.

Sugar adjustment: The tablespoon of sugar balances the vinegar rather than making the salad taste like dessert. Start with less if your tomatoes are especially sweet, then adjust after marinating.

Ingredient substitutions: White wine vinegar gives a clean, gentle acidity. Apple cider vinegar adds a slightly fruity flavor. Distilled white vinegar can also work, but its sharper taste may require a small adjustment to the sweetness.

Tips for Marinated Cucumber, Tomato & Onion Salad

Keep the cucumber slices substantial. Paper-thin slices soften quickly. Slightly thicker rounds retain more crunch during marinating.
Dry washed vegetables. Excess water on the surface dilutes the dressing before the vegetables even begin releasing their own juices.
Use a roomy bowl. Enough space makes it easier to coat the ingredients without crushing the tomatoes.
Start with a short marinating time. Check the salad after 30 minutes. Leave it longer if you prefer softer onions and a stronger marinated flavor.
Add delicate extras at serving time. If using avocado or crumbled feta, fold them in just before serving to preserve their texture.
Taste after chilling. The final flavor can differ from the freshly mixed dressing, especially once the tomatoes release their juices.
Refresh leftovers gently. A little fresh parsley and a few turns of black pepper can brighten the next day’s portion.

Serving Suggestions for Marinated Cucumber, Tomato & Onion Salad

Marinated Cucumber, Tomato & Onion Salad pairs beautifully with warm, savory dishes. Serve it beside roasted chicken, grilled fish, turkey burgers, or baked potatoes. Its bright dressing also complements richer meals such as meatloaf or cheesy casseroles.

For a simple lunch, spoon some salad into a pita with hummus and cooked chickpeas. You can also serve it over cooked, cooled rice or quinoa. Use a slotted spoon when filling sandwiches or wraps so the extra dressing does not soak the bread.

For a family gathering, bring the salad to the table in a wide serving bowl. Toss just before serving to redistribute the herbs and dressing.

Storage and Make-Ahead

Store leftovers in a covered container in the refrigerator and use within two days for the best texture. The cucumbers gradually soften, and the tomatoes release more liquid as the salad sits.

For advance preparation, slice the cucumbers and onions and mix the dressing separately. Keep everything refrigerated, then cut the tomatoes and combine the salad 30–60 minutes before serving.

Freezing is not recommended because thawed cucumbers and tomatoes become soft and watery. Keep the salad chilled until serving and return leftovers to the refrigerator promptly.

Nutritional Information for Marinated Cucumber, Tomato & Onion Salad

Approximate nutrition per serving, based on six servings and including all the dressing:

Nutrient Approximate amount
Calories 105 kcal
Total fat 7 g
Saturated fat 1 g
Carbohydrates 10 g
Fiber 2 g
Total sugars 7 g
Protein 2 g
Sodium 200 mg

Actual values vary with vegetable sizes, ingredient brands, salt adjustments, and how much dressing remains in the bowl. These figures are estimates rather than a laboratory analysis.

Nutritional Benefits for Marinated Cucumber, Tomato & Onion Salad

This salad offers a flavorful way to include more vegetables in an everyday meal. Cucumbers and tomatoes contain plenty of water, contributing to the dish’s refreshing character.

Tomatoes provide vitamin C and carotenoids, including lycopene. Cucumbers, onions, and tomatoes also contribute some fiber, especially when the cucumber skins remain on.

Olive oil supplies mostly unsaturated fat and helps the dressing coat the vegetables. Because the recipe contains no dairy, eggs, or meat, it suits many plant-based meals. It is naturally gluten-free when prepared with suitable ingredients.

Although refreshing and vegetable-rich, this salad is a side dish rather than a complete meal. Pair it with a protein source and other foods appropriate to your appetite.

Questions and Answers for Marinated Cucumber, Tomato & Onion Salad

Can I make this salad the night before?

Yes, but expect softer cucumbers and more liquid. For a crisper result, prepare the dressing and most vegetables ahead, then combine them closer to serving.

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Should I peel the cucumbers?

Thin-skinned English and Persian cucumbers usually do not need peeling. Remove tough or bitter skins from larger garden cucumbers, or peel alternating strips for a decorative finish.

Can I leave out the sugar?

Yes. The salad will taste more sharply acidic. Try it without sugar first, then add a small amount only if you want a gentler balance.

Can I use red onion?

Absolutely. Red onion adds color and a slightly different flavor. Slice it thinly and soak it briefly in cold water if you find the taste too strong.

Why did my salad become watery?

Cucumbers and tomatoes naturally release water after being salted. This is expected. Use firm vegetables, avoid overly long marinating, and serve with a slotted spoon if desired.

What herbs can I use instead of parsley?

Fresh dill or basil both work well. Dill gives a classic cucumber-salad flavor, while basil pairs especially nicely with ripe tomatoes. Add tender herbs shortly before serving.

Can I add other ingredients?

Yes. Sliced bell peppers, cooked chickpeas, olives, or feta are easy additions. Keep the original vegetable proportions as your starting point and adjust the dressing to taste. https://ketosl.com/spinach-roasted-red-pepper-stuffed-chicken-breast/