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Marinated Cucumber Tomato Onion Salad: A Fresh, Tangy, and Easy Side Dish

Marinated Cucumber Tomato Onion Salad is a simple, refreshing salad made with crisp cucumbers, juicy tomatoes, thinly sliced onions, and a light vinegar-based dressing. It is fresh, colorful, and full of bright flavor. The vegetables soak in the marinade, becoming slightly tender while still keeping their natural crunch.

This salad is perfect for summer meals, barbecues, family dinners, potlucks, picnics, or as a light side dish with grilled chicken, fish, steak, burgers, or sandwiches. It is easy to prepare, budget-friendly, and tastes even better after sitting in the refrigerator for a while.

Why This Salad Is So Good

The secret to this salad is the marinade. The vinegar gives it a sharp, tangy taste, the oil adds smoothness, the sugar balances the acidity, and the herbs bring freshness. As the cucumbers, tomatoes, and onions rest in the dressing, they absorb the flavor and become more delicious.

It is light but satisfying, crunchy but juicy, and simple but full of flavor. Unlike heavy creamy salads, this one feels clean, bright, and refreshing.

Ingredients

For the Salad

2 large cucumbers, sliced
3 medium tomatoes, cut into wedges or chunks
1 medium red onion or white onion, thinly sliced
2 tablespoons fresh parsley, chopped
1 tablespoon fresh dill, optional
½ teaspoon salt
½ teaspoon black pepper

For the Marinade

½ cup white vinegar or apple cider vinegar
¼ cup olive oil or vegetable oil
2 tablespoons water
1 tablespoon sugar, or to taste
1 teaspoon salt
½ teaspoon black pepper
½ teaspoon garlic powder
½ teaspoon dried oregano or Italian seasoning
1 tablespoon lemon juice, optional

Step 1: Choose Fresh Vegetables

Start with firm cucumbers, ripe tomatoes, and a fresh onion.

Cucumbers should feel crisp and not soft. Tomatoes should be ripe but not mushy. For the onion, red onion gives a slightly sweet and colorful result, while white onion gives a sharper flavor.

Fresh vegetables make a big difference because this salad is not cooked. The flavor and texture depend on the quality of the ingredients.

Step 2: Prepare the Cucumbers

Wash the cucumbers well.

You can peel them completely, leave the skin on, or peel them in stripes for a nice look. If the cucumber skin is thin and tender, leaving it on adds color and crunch.

Slice the cucumbers into thin rounds. If the cucumbers are very large, cut them in half lengthwise first, then slice them into half-moons.

Place the sliced cucumbers into a large mixing bowl.