A Fresh, Crisp, and Tangy Summer Salad Made with Simple Ingredients
This Marinated Cucumber, Onion, and Tomato Salad is a refreshing side dish that’s perfect for warm-weather meals. Crisp cucumbers, juicy tomatoes, and thinly sliced onions are tossed in a simple sweet-and-tangy marinade made with vinegar, oil, and seasonings. After chilling, the vegetables soak up all those delicious flavors while staying wonderfully fresh and crunchy.
It’s easy, inexpensive, and ideal for picnics, cookouts, potlucks, and everyday family dinners.
Why You’ll Love This Salad
- Quick and easy to prepare
- Fresh and refreshing
- Uses simple ingredients
- No cooking required
- Perfect make-ahead side dish
- Great for summer gatherings
- Sweet, tangy, and savory
Ingredients
For the Salad
- 2 large cucumbers, thinly sliced
- 3 medium tomatoes, cut into wedges or bite-sized pieces
- 1 medium sweet onion, thinly sliced
- ¼ cup chopped fresh parsley
For the Marinade
- ½ cup apple cider vinegar
- ¼ cup olive oil
- 2 tablespoons granulated sugar
- 1 teaspoon salt
- ½ teaspoon black pepper
- ½ teaspoon garlic powder
- ½ teaspoon dried oregano
Instructions
Step 1: Prepare the Vegetables
Wash and dry the cucumbers and tomatoes.
Slice the cucumbers into thin rounds.
Cut the tomatoes into wedges or bite-sized pieces.
Thinly slice the onion.
Place all the vegetables in a large mixing bowl.
Step 2: Make the Marinade
In a small bowl, whisk together the apple cider vinegar, olive oil, sugar, salt, black pepper, garlic powder, and oregano.
Continue whisking until the sugar is mostly dissolved and the dressing is well combined.
Step 3: Combine
Pour the marinade over the cucumbers, tomatoes, and onions.
Add the chopped parsley.
Gently toss everything together until the vegetables are evenly coated.
Step 4: Marinate
Cover the bowl and refrigerate for at least 1–2 hours.
For deeper flavor, let the salad marinate for up to 4 hours.
Give it a gentle toss once or twice while chilling.
Step 5: Serve
Remove the salad from the refrigerator and give it another gentle toss.
Taste and adjust the salt, pepper, or vinegar if needed.
Serve chilled or slightly cool.
Tips for the Best Cucumber Tomato Salad
Use ripe but firm tomatoes
Very soft tomatoes can become mushy during marinating. Firm, ripe tomatoes hold their shape better.
Slice the onions thinly
Thin slices allow the onion to absorb the tangy marinade while adding just the right amount of bite.
Don’t over-marinate
The longer the vegetables sit in vinegar, the softer they become. For the freshest texture, serve within a few hours.
Remove excess cucumber moisture
If your cucumbers are particularly watery, lightly salt the slices and let them sit for about 15 minutes. Pat them dry before adding them to the salad.
Taste before serving
The vegetables can absorb some of the marinade as they chill, so taste the salad before serving and adjust the seasoning if necessary.
Delicious Variations
Feta Cucumber Tomato Salad
Add ½ cup crumbled feta cheese for a creamy, salty Mediterranean-inspired version.
Avocado Version
Add diced avocado just before serving for extra creaminess.
Italian-Style Salad
Add fresh basil, oregano, and a little grated Parmesan.
Greek-Inspired Salad
Add Kalamata olives, feta cheese, oregano, and a squeeze of fresh lemon juice.
Spicy Cucumber Salad
Add thinly sliced jalapeño or a pinch of crushed red pepper flakes.
Creamy Version
Replace part of the oil-and-vinegar marinade with sour cream or Greek yogurt.
What to Serve With It
This refreshing salad pairs beautifully with:
- Grilled chicken
- Fried chicken
- Steak
- Burgers
- BBQ ribs
- Pulled pork
- Grilled fish
- Baked chicken
- Pork chops
- Grilled sausages
- Sandwiches
It’s especially delicious alongside grilled meats, corn on the cob, and potato salad for a classic summer cookout.
Make-Ahead Instructions
You can prepare the salad several hours before serving.
For the best texture, prepare the vegetables and marinade separately and combine them about 1–2 hours before serving.
If making it the night before, keep in mind that the cucumbers and tomatoes will become softer as they sit.
Storage
Store the salad in a covered container in the refrigerator.
For the best quality, enjoy it within 2 days.
Give it a gentle stir before serving, as the dressing may separate during storage.
Frequently Asked Questions
Can I use cherry tomatoes?
Absolutely. Cherry or grape tomatoes work particularly well because they hold their shape nicely.
Can I use red onion?
Yes. Red onion adds beautiful color and a slightly stronger flavor.
Can I make this salad without sugar?
Yes. The sugar balances the acidity of the vinegar, but you can reduce it or leave it out if you prefer a sharper, more savory salad.
Can I use white vinegar?
Yes, although white vinegar has a sharper flavor. Apple cider vinegar provides a slightly milder, more rounded taste.
Can I add cheese?
Definitely. Feta is an especially delicious addition.
Final Thoughts
Marinated Cucumber, Onion, and Tomato Salad is a simple side dish that delivers plenty of fresh flavor without much effort. Crisp cucumbers, juicy tomatoes, and sweet onions soak up a tangy homemade marinade to create a salad that’s refreshing, colorful, and incredibly easy to love.
Make it for a summer barbecue, picnic, potluck, or Sunday dinner, and let it chill until all those bright flavors come together.
