This Marinated Cucumbers, Onions, and Tomatoes recipe is a crisp, tangy, and refreshing side dish that’s perfect for summer picnics, backyard BBQs, or simple weeknight dinners. It’s a no-fuss salad that delivers bold flavor with minimal ingredients and prep.
Why You’ll Love This Recipe
- Refreshing and light: The combination of crisp cucumbers, juicy tomatoes, and sharp onions makes for a hydrating and flavorful bite.
- Quick and easy prep: Just slice, mix, marinate, and enjoy.
- Perfect for make-ahead: The flavors deepen the longer it marinates, making it ideal for meal prep.
- Versatile: Serve as a salad, side dish, or even a topping for grilled meats or sandwiches.
- Low-calorie and gluten-free: A naturally healthy addition to any menu.
Ingredients
- 2 cucumbers, thinly sliced
- 1 pint cherry or grape tomatoes, halved
- 1 small red or white onion, thinly sliced
- 1/4 cup apple cider vinegar or red wine vinegar
- 2 tbsp extra virgin olive oil
- 1 clove garlic, minced
- 1 tbsp chopped fresh parsley or dill
- Salt and pepper to taste
- 1/2 tsp red pepper flakes (optional)
Instructions
- Wash and slice the cucumbers. Halve the tomatoes and thinly slice the onion.
- In a small bowl, whisk together the vinegar, olive oil, minced garlic, salt, and pepper. Add red pepper flakes if you like a little heat.
- Combine cucumbers, tomatoes, and onions in a large mixing bowl.
- Pour the vinaigrette over the vegetables and toss gently until well coated.
- Cover the bowl and refrigerate for at least 30 minutes. For best flavor, marinate for a few hours or overnight.
- Before serving, toss again and garnish with fresh parsley or dill.
Serving Suggestions
This marinated salad pairs beautifully with a variety of main dishes. Here are some tasty ways to enjoy it:
- Serve alongside grilled chicken, fish, or steak for a fresh contrast.
- Add to pita sandwiches, gyros, or wraps for a juicy crunch.
- Top a bed of greens or quinoa for a simple, satisfying lunch bowl.

Tips for the Best Marinated Cucumber Salad
- Use English or Persian cucumbers for fewer seeds and extra crunch.
- Let it marinate longer if possible—overnight makes the flavors shine.
- Customize the herbs: Dill brings a classic touch, while parsley adds brightness.
- Chill before serving to enhance flavor and texture.
- Don’t skip the salt: It draws moisture from the vegetables and balances the acidity.
Storage
Store leftovers in an airtight container in the refrigerator for up to 3 days. The vegetables will soften over time, but the flavor will continue to improve. Stir before serving to redistribute the marinade.
Recipe Card
- Yield: 4 servings
- Prep Time: 10 minutes
- Chill Time: 30 minutes (or more)
- Total Time: 40 minutes
More Summer Salad Recipes
Craving more easy side dishes? Don’t forget to save this recipe to Pinterest and share it with your summer meal planning board!
