Some salads are forgettable, but this marinated cucumber, onion, and tomato salad is anything but. With its crisp texture, bright flavors, and effortless prep, it’s a dish you’ll find yourself making again and again.
The secret is in the dressing—a simple mix of vinegar, oil, sugar, and seasonings that transforms ordinary vegetables into something extraordinary. The cucumbers stay crunchy, the tomatoes become juicier, and the onions soften just enough to add flavor without overpowering.
This Easy, Flavor-Packed Salad Will Steal the Show at Any Meal
Making it couldn’t be easier. Slice the veggies, whisk the dressing, toss everything together, and let it chill. In two hours, you’ll have a salad that’s refreshing, slightly sweet, and packed with zesty tang.
Use whatever tomatoes you love—heirlooms for richness, Romas for meatiness, or cherries for sweetness. Red onions add a nice kick, but sweet onions work too if you prefer something milder.
This salad is a fantastic side for barbecues, picnics, or even as a light lunch on its own. It keeps well for days, so you can enjoy it all week long.
This Marinated Cucumber, Onion, and Tomato Salad Is the Summer Side Dish You’ll Crave Again and Again
Not all salads leave a lasting impression—but this marinated cucumber, onion, and tomato salad is a total game-changer. With crisp, garden-fresh veggies and a tangy-sweet dressing that bursts with flavor, it’s the kind of simple dish that earns a permanent spot in your warm-weather recipe rotation.
The magic lies in the easy homemade marinade—a vibrant mix of vinegar, oil, sugar, salt, pepper, and herbs. This effortless dressing draws out the natural juiciness of the tomatoes, enhances the crunch of the cucumbers, and mellows the sharpness of the onions into something utterly addictive.
Why You’ll Love This Salad
- Quick to make – Just slice, mix, and chill. No cooking required.
- Versatile – Perfect with grilled meats, sandwiches, or even on its own.
- Customizable – Use any tomatoes you have on hand—juicy heirlooms, firm Romas, or sweet cherry tomatoes. Swap red onions for milder white or sweet onions based on your preference.
- Make-ahead friendly – It actually tastes better after marinating for a few hours, and it holds up beautifully in the fridge for several days.
Serving Tips
Serve this refreshing salad at barbecues, family dinners, or potlucks, or enjoy it as a light, healthy lunch on a hot day. It’s a no-fuss dish that never fails to impress, and it’s especially great when made with fresh summer produce.
Whether you’re looking for a side dish to complement grilled chicken or a zesty salad to bring to a picnic, this cucumber, tomato, and onion salad delivers bold, bright flavor in every bite.
🥗 Marinated Cucumber, Onion, and Tomato Salad Recipe
🛒 Ingredients:
- 2 large cucumbers, thinly sliced (peeling optional)
- 2–3 medium tomatoes, cut into wedges or bite-sized chunks
- 1 medium red onion, thinly sliced
- 1/4 cup white vinegar (or apple cider vinegar for a subtle sweetness)
- 1/4 cup water
- 3 tablespoons vegetable or olive oil
- 2 tablespoons granulated sugar (adjust to taste)
- 1 teaspoon salt
- 1/2 teaspoon freshly ground black pepper
- 1/2 teaspoon dried oregano or Italian seasoning (optional)
- Fresh parsley or basil, chopped (for garnish)
🥣 Instructions:
- Prepare the Vegetables:
Slice the cucumbers and onions thinly. Cut tomatoes into wedges or bite-sized pieces. Add all vegetables to a large bowl. - Make the Marinade:
In a separate small bowl or measuring cup, whisk together the vinegar, water, oil, sugar, salt, pepper, and oregano if using. - Combine & Toss:
Pour the dressing over the vegetables. Toss gently to coat everything evenly. - Chill and Marinate:
Cover and refrigerate the salad for at least 2 hours, stirring occasionally. This helps the flavors meld and the vegetables absorb the tangy-sweet marinade. - Serve:
Garnish with chopped fresh herbs just before serving. Enjoy cold or at room temperature.
💡 Helpful Tips:
- Peel or don’t peel? If your cucumbers have thick or waxy skins, peeling is a good idea. Otherwise, feel free to leave the skin on for added texture and color.
- Want it less tangy? Reduce the vinegar slightly or use rice vinegar for a milder taste.
- Spice it up: Add a pinch of crushed red pepper flakes or a splash of hot sauce for some heat.
- Make it a meal: Toss in a can of chickpeas or cubes of feta cheese for a protein boost.
- Add crunch: Top with croutons, sunflower seeds, or chopped nuts for extra bite just before serving.
🧊 Storage:
This salad stores well in an airtight container in the refrigerator for up to 4–5 days. In fact, it might taste even better the next day once all the flavors deepen.
🥄 Why This Salad is a Must-Try
Simple ingredients, minimal effort, and maximum flavor—that’s what makes this marinated salad a standout. It’s a perfect make-ahead option for entertaining or for meal prep during the week. Whether you’re heading to a picnic, hosting a BBQ, or just craving a refreshing bite, this dish never disappoints.
