Marinated Cucumbers, Onions, and Tomatoes
There are few things as refreshing and effortlessly satisfying as a jar of marinated cucumbers, onions, and tomatoes chilling in the fridge. I’ve always been drawn to recipes that highlight the natural flavor of fresh produce, and this one is at the top of my favorites list. It’s the perfect harmony of tangy, sweet, and savory, all brought together by a zesty vinaigrette that soaks into every juicy bite.
What I love most about this dish is how simple it is to throw together. With just a handful of ingredients and a few minutes of prep time, you can have a vibrant salad that complements nearly any meal. I often make a large batch to keep on hand for the week, and trust me, it disappears faster than you’d think. It’s versatile enough to serve as a side, a light lunch, or even as a topping for grilled meats or sandwiches.
This recipe holds a special place in my heart because it brings back memories of family picnics and summer potlucks. The smell of vinegar and fresh herbs instantly takes me back to those sunny afternoons, laughing with loved ones while loading up my plate with seconds. If you’re looking for something nostalgic yet fresh, you’ll find it in every crisp, marinated bite.



Why You’ll Love This Marinated Cucumbers, Onions, and Tomatoes Recipe
This marinated mix is more than just a salad; it’s an experience of textures and flavors that awaken your palate. You’ll love it because it’s light, crisp, and incredibly flavorful without needing heavy dressings or complicated steps. It pairs wonderfully with barbecue, roasted dishes, or can even be served with crusty bread as an appetizer. Plus, it gets even better after a night in the fridge, making it a go-to for meal prep or easy entertaining.
Ingredients
Cucumbers are the crisp and hydrating base of this dish. I love using English cucumbers for their thin skin and mild flavor, but any fresh variety will do the trick.
Cherry Tomatoes add a burst of color and natural sweetness. Their juicy texture pairs perfectly with the crunch of cucumber and the zing of the dressing.
Onions bring a sharp, tangy bite that balances the other flavors beautifully. I prefer using white or sweet onions for a milder profile.
Vinegar acts as the star of the marinade. Apple cider vinegar or white vinegar both work well, giving the salad its signature tang.
Olive Oil helps mellow out the acidity and adds a rich, smooth finish to the marinade.
Sugar might seem like a surprise, but it enhances the natural flavors and offsets the sharpness of the vinegar.
Salt and Pepper are essential for seasoning. They bring out the best in every ingredient.
Dried Herbs like parsley or Italian seasoning lend depth and an herby aroma that makes the whole dish more complex and delicious.
Red Pepper Flakes are optional but highly recommended for a little kick and warmth in the background.
How to Make Marinated Cucumbers, Onions, and Tomatoes
Step 1: Prepare the Vegetables
Slice the cucumbers into thin rounds and halve the cherry tomatoes. Cut the onions into thin slivers. Place all the vegetables in a large bowl or jar.
Step 2: Make the Marinade
In a separate bowl, whisk together the vinegar, olive oil, sugar, salt, pepper, dried herbs, and red pepper flakes. Stir until the sugar is fully dissolved.
Step 3: Combine and Chill
Pour the marinade over the prepared vegetables. Toss or shake well to ensure everything is evenly coated. Cover and refrigerate for at least 2 hours, but preferably overnight.
Step 4: Serve and Enjoy
Before serving, give everything a good stir. Taste and adjust seasoning if needed. Enjoy straight from the jar or plated with your favorite mains.
Recipe Variations and Possible Substitutions
This marinated salad is endlessly customizable. You can swap in red onions or shallots for a different flavor twist. If you’re watching your sugar intake, use honey or a sugar alternative to balance the acidity. Feel free to experiment with herbs – dill, basil, or oregano each bring their own character to the mix. If you want it extra tangy, a splash of lemon juice can brighten the entire jar. For a heartier version, toss in cubes of feta or mozzarella, or even sliced olives to make it Mediterranean-inspired.
Serving and Pairing Suggestions
This salad is perfect on its own, but it really shines when paired with grilled meats like chicken, steak, or pork chops. I also love serving it alongside burgers or as a vibrant topping for tacos. If you’re planning a picnic or potluck, it travels well and adds a crisp contrast to heavier dishes. For a light lunch, spoon it over couscous or quinoa for a refreshing grain bowl.



Storage and Reheating Tips
Keep the marinated cucumbers, onions, and tomatoes in an airtight container or mason jar in the fridge. It will stay fresh for about 5 days, and the flavor actually improves after the first day. No reheating is needed; in fact, this salad is best served cold or at room temperature. If any liquid separates, just give it a quick stir or shake before enjoying.
FAQs
How long does Marinated Cucumbers, Onions, and Tomatoes last in the fridge?
Stored properly in an airtight container, this salad stays fresh for up to 5 days. It gets more flavorful as it marinates!
Can I make Marinated Cucumbers, Onions, and Tomatoes without sugar?
Absolutely. You can substitute the sugar with honey, maple syrup, or a sugar-free alternative like stevia.
What type of vinegar is best for Marinated Cucumbers, Onions, and Tomatoes?
Apple cider vinegar is my favorite for its mild tang and sweetness, but white vinegar or even rice vinegar work well too.
Can I use dried herbs instead of fresh in Marinated Cucumbers, Onions, and Tomatoes?
Yes, dried herbs work great in the marinade. They infuse beautifully over time. Just reduce the quantity slightly, as dried herbs are more concentrated.
Is it okay to freeze Marinated Cucumbers, Onions, and Tomatoes?
Freezing is not recommended. The texture of cucumbers and tomatoes changes dramatically after thawing, becoming mushy and watery.
Related Recipe You’ll Like
If you loved this bright and zesty salad, you should definitely check out our Cheesy Baked Tennessee Onions for another savory way to enjoy onions in a side dish. Craving something a bit sweeter to balance the tang? Our Southern Hummingbird Cake is a beautiful dessert to finish your meal with a Southern flair. And for another fresh and light option, try the Light Lemon Basil Pasta Salad with Chicken — it’s another meal prep favorite of mine.
Save and Share This Recipe for Later
If this Marinated Cucumbers, Onions, and Tomatoes recipe made your taste buds dance, don’t forget to save it! Pin it to your favorite recipe board on Pinterest so you can always come back to it when you need a fresh side dish or a potluck go-to. Share it with your friends on Facebook or Instagram, and spread the love for fresh, easy, and flavorful eating!
Marinated Cucumbers, Onions, and Tomatoes

This marinated cucumbers, onions, and tomatoes recipe is a crisp, tangy, and refreshing side dish perfect for summer meals, potlucks, and meal prep. Packed with juicy cherry tomatoes, crunchy cucumbers, and slivered onions, all soaked in a zesty vinegar-based marinade, it's the kind of dish that brings nostalgic flavor with minimal effort. Whether served chilled with grilled meat or as a topping for your favorite sandwiches, this easy-to-make salad is always a hit.
Ingredients
- 2 large cucumbers, sliced
- 1 pint cherry tomatoes, halved
- 1 medium onion, thinly sliced
- 1/2 cup apple cider vinegar
- 1/4 cup olive oil
- 2 tablespoons sugar
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon dried parsley or Italian seasoning
- 1/4 teaspoon red pepper flakes (optional)
Instructions
- Add sliced cucumbers, halved cherry tomatoes, and sliced onions to a large bowl or mason jar.
- In a separate bowl, whisk together vinegar, olive oil, sugar, salt, pepper, herbs, and red pepper flakes until well combined.
- Pour the marinade over the vegetables and mix or shake to coat thoroughly.
- Cover and refrigerate for at least 2 hours or overnight.
- Stir before serving. Enjoy chilled or at room temperature.
Notes
- English cucumbers work best for this recipe due to their tender skin.
- Feel free to substitute sugar with honey or your preferred sweetener.
- The longer it marinates, the deeper the flavor.
- Best enjoyed within 3–5 days.
Nutrition Information:
Yield:
6Serving Size:
1Amount Per Serving: Calories: 133Total Fat: 9gSaturated Fat: 1gTrans Fat: 0gUnsaturated Fat: 8gCholesterol: 0mgSodium: 359mgCarbohydrates: 12gFiber: 2gSugar: 8gProtein: 1g