About This Recipe
This marinated cucumber, onion, and tomato salad is the perfect no-cook side dish for warm days. Crisp cucumbers, juicy tomatoes, and thinly sliced onions are tossed in a sweet and tangy vinegar dressing and chilled to let the flavors blend beautifully. It’s quick, healthy, and full of garden-fresh flavor.

Why You’ll Love This Recipe
- Requires no cooking or special equipment
- Made with simple, seasonal ingredients
- Combines sweet, tangy, and savory elements
- Great as a salad, side dish, or sandwich topping
- Naturally vegan and gluten-free

Marinated Cucumbers, Onions, and Tomatoes: A Simple and Refreshing Summer Salad
Description
This marinated cucumber, onion, and tomato salad is the perfect no-cook side dish for warm days. Crisp cucumbers, juicy tomatoes, and thinly sliced onions are tossed in a sweet and tangy vinegar dressing and chilled to let the flavors blend beautifully. It’s quick, healthy, and full of garden-fresh flavor.
Ingredients
- 2 medium cucumbers (about 1 lb / 450g)
- 1 medium white or red onion
- 3 medium tomatoes (about 1 lb / 450g)
- ½ cup white vinegar (120ml)
- ¼ cup water (60ml)
- 2 tablespoons granulated sugar
- 1 teaspoon salt
- ½ teaspoon black pepper
- 2 tablespoons olive oil
- 1 tablespoon fresh chopped dill (optional)
Instructions
Wash cucumbers and tomatoes. Peel the cucumbers if you prefer a softer bite. Slice cucumbers into ¼-inch rounds. Peel and thinly slice the onion. Cut tomatoes into wedges or chunks.
In a separate bowl or jar, combine the vinegar, water, sugar, salt, and pepper. Whisk until the sugar is fully dissolved.
Add cucumbers, onions, and tomatoes to a large mixing bowl. Pour the vinegar mixture over the top and add the olive oil. Gently toss to coat everything evenly.
If using fresh dill, stir it in for extra flavor.
Cover the bowl and refrigerate for at least 2 hours, ideally 4. Stir occasionally while chilling to help the flavors blend.
Before serving, drain off some of the liquid if you prefer a less juicy salad. Serve cold for the best texture and taste.
Notes
This marinated cucumber, onion, and tomato salad is a fresh, easy-to-make dish that pairs well with grilled meats, sandwiches, or anything off the summer menu. It’s proof that simple ingredients can create truly delicious results.
Ingredients
- 2 medium cucumbers (about 1 lb / 450g)
- 1 medium white or red onion
- 3 medium tomatoes (about 1 lb / 450g)
- ½ cup white vinegar (120ml)
- ¼ cup water (60ml)
- 2 tablespoons granulated sugar
- 1 teaspoon salt
- ½ teaspoon black pepper
- 2 tablespoons olive oil
- 1 tablespoon fresh chopped dill (optional)
Step-by-Step Instructions
1. Prepare the vegetables
Wash cucumbers and tomatoes. Peel the cucumbers if you prefer a softer bite. Slice cucumbers into ¼-inch rounds. Peel and thinly slice the onion. Cut tomatoes into wedges or chunks.
2. Make the dressing
In a separate bowl or jar, combine the vinegar, water, sugar, salt, and pepper. Whisk until the sugar is fully dissolved.
3. Mix it all together
Add cucumbers, onions, and tomatoes to a large mixing bowl. Pour the vinegar mixture over the top and add the olive oil. Gently toss to coat everything evenly.
4. Add herbs (optional)
If using fresh dill, stir it in for extra flavor.
5. Marinate
Cover the bowl and refrigerate for at least 2 hours, ideally 4. Stir occasionally while chilling to help the flavors blend.
6. Serve
Before serving, drain off some of the liquid if you prefer a less juicy salad. Serve cold for the best texture and taste.
FAQ
Can I use a different vinegar?
Yes. Apple cider vinegar works well and adds a milder sweetness. Red wine vinegar is also a good option.
How thin should I slice the vegetables?
About ¼ inch thick. Consistent thickness ensures all the pieces marinate evenly.
Can I add other vegetables?
Yes. Bell peppers, radishes, or even thin carrot slices can be added without changing the dressing quantities.
What You Should Know
- Marinating for at least 2 hours helps the flavors fully develop
- Tomatoes will soften as they absorb the marinade
- Draining excess liquid before serving improves texture
- Salt pulls moisture from the vegetables, creating a natural brine
Storage Tips
- Store leftovers in an airtight container in the fridge for 3 to 4 days
- Expect the vegetables to soften over time
- Do not freeze, as it will affect the texture
- If prepping ahead, keep veggies and dressing separate and mix 4 hours before serving
This marinated cucumber, onion, and tomato salad is a fresh, easy-to-make dish that pairs well with grilled meats, sandwiches, or anything off the summer menu. It’s proof that simple ingredients can create truly delicious results.