Marinated Cucumber, Onion, and Tomato Salad

 Marinated Cucumber, Onion, and Tomato Salad

A Refreshing, Tangy-Sweet Side Dish You'll Make Again and Again

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When it comes to quick, wholesome, and flavor-packed side dishes, Marinated Cucumber, Onion, and Tomato Salad is a true kitchen MVP. It’s the kind of recipe that makes you wonder why you ever bothered with store-bought salads. Crisp vegetables, a tangy-sweet vinaigrette, and just a hint of fresh herbs — this simple, old-fashioned salad bursts with bold, refreshing flavor and pairs beautifully with almost any meal.

Whether you're hosting a summer barbecue, prepping meals for the week, or just need something light to balance a rich main course, this salad fits the bill. With just a handful of budget-friendly ingredients and minimal prep time, you’ll have a dish that tastes even better as it sits and marinates.

Let’s dive into why this Marinated Vegetable Salad deserves a permanent spot in your recipe rotation.

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Ingredients & Their Roles

Here’s what you’ll need to create this irresistible salad — and why each ingredient matters:

2 large cucumbers, thinly sliced

Provides crunch and freshness; a hydrating, low-calorie base.

2–3 ripe tomatoes, cut into wedges or large chunks

Adds juiciness and natural sweetness to balance the tangy marinade.

1 red onion, thinly sliced

Lends a mild sharpness and beautiful color contrast; mellows during marination.

½ cup white vinegar

The foundation of the marinade; adds acidity that brightens the salad.

¼ cup water

Dilutes the vinegar for a balanced tang without overpowering the vegetables.

2 tablespoons sugar

Adds subtle sweetness that contrasts beautifully with the vinegar.

2 tablespoons olive oil

Provides richness and helps the dressing coat the vegetables evenly.

1 teaspoon salt

Enhances the natural flavors of the vegetables.

½ teaspoon black pepper

Adds a gentle kick of spice.

1 teaspoon dried dill (optional)

Adds a hint of herbaceous flavor that complements the cucumber and onion.

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Step-by-Step Instructions

1. Prepare the Vegetables

Wash and dry all vegetables thoroughly.

Slice the cucumbers into thin rounds.

Cut the tomatoes into wedges or bite-sized pieces.

Thinly slice the red onion into rings or half-moons.

Place all vegetables in a large mixing bowl.

Pro Tip: If your onions are particularly sharp, soak the slices in cold water for 10 minutes before adding to the salad. This reduces bitterness while keeping the crunch.

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2. Make the Marinade

In a small bowl or mason jar, whisk together:

½ cup white vinegar

¼ cup water

2 tablespoons sugar

2 tablespoons olive oil

1 teaspoon salt

½ teaspoon black pepper

1 teaspoon dried dill (if using)

Mix until the sugar is completely dissolved and the dressing is emulsified.

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3. Combine and Toss

Pour the marinade over the prepared vegetables.

Gently toss everything together until the vegetables are evenly coated in the marinade.

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4. Marinate

Cover the bowl with plastic wrap or a lid.

Refrigerate for at least 2 hours, but overnight is ideal for maximum flavor.

Pro Tip: Stir the salad once or twice during marination to ensure even distribution of flavor.

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Why This Salad Is So Loved

Flavor Explosion: The combination of crisp cucumbers, juicy tomatoes, and tangy onions soaked in a sweet and sour marinade hits every note.

Make-Ahead Friendly: It only gets better with time — perfect for busy weeknights or prep-ahead dinners.

Naturally Healthy: Low in calories, gluten-free, dairy-free, and heart-healthy.

Versatile Pairing: Pairs with everything from grilled meats to sandwiches or even Mediterranean dishes.

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Serving Suggestions

Here are a few ways to serve this marinated cucumber, onion, and tomato salad for a complete, satisfying meal:

With Grilled Proteins: Serve alongside grilled chicken, steak, or salmon for a refreshing contrast.

On Sandwiches or Wraps: Add it to pita wraps or sandwiches for crunch and flavor.

As a Picnic Side Dish: Ideal for outdoor dining — no mayo means it travels well.

Next to Hearty Dishes: Balance out heavier entrees like casseroles, pasta bakes, or fried foods.

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Pro Tips for the Perfect Salad

Use ripe, in-season tomatoes for the best flavor.

English cucumbers or Persian cucumbers are great choices — they’re crisp and less seedy.

Want a touch of heat? Add a pinch of crushed red pepper flakes to the marinade.

Fresh dill can be used in place of dried dill for a brighter herbal note.

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Conclusion: Simple, Flavorful, and Unforgettable

This Marinated Cucumber, Onion, and Tomato Salad proves that you don’t need complex ingredients to create something truly delicious. With crisp vegetables and a bright, balanced marinade, it’s the kind of dish that keeps you coming back for more.

It’s easy, it’s affordable, and it’s packed with fresh flavor — the perfect side for any occasion. Make it once, and you’ll find yourself reaching for this recipe again and again.

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Try it, love it, and share it — because the best recipes are the ones that bring people together.

Want more fresh, flavorful sides like this? Be sure to bookmark this recipe and explore our collection of healthy, make-ahead salads!

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