Marinated Cucumbers, Onions, and Tomatoes: A Refreshing Summer Side

Every summer growing up, my mom would have a big bowl of Marinated Cucumbers, Onions, and Tomatoes chilling in the fridge. It wasn’t just a side dish—it was summer in a bowl. We’d pull it out with grilled burgers, baked chicken, even next to a hot plate of mac and cheese. I loved how cold and crisp it was, with a sweet-tangy marinade that got better every day.

Now I make this all the time for my family. It’s quick, simple, and a hit with everyone—even the picky eaters. Plus, it’s healthy and budget-friendly. What more can you ask from a summer salad?

Why You’ll Love Marinated Cucumbers, Onions, and Tomatoes

• Cool and refreshing: It’s the side dish you crave on hot days.
• Quick to prep: Minimal effort for maximum flavor.
• Super versatile: Pairs with almost any grilled meat or picnic plate.
• Budget-friendly: Uses pantry staples and garden veggies.
• Family-approved: Even kids love the sweet-and-sour dressing.

Ingredients for Marinated Cucumbers, Onions, and Tomatoes

This cucumber tomato onion salad keeps it simple with ingredients you likely already have:

• 3 medium cucumbers, peeled and sliced 1/4 inch thick
• 1 medium onion, thinly sliced (red onion adds a pop of color)
• 3 medium tomatoes, cut into wedges
• 1/2 cup vinegar (white or apple cider vinegar both work)
• 1/4 cup sugar
• 1 cup water
• 2 teaspoons salt
• 1 teaspoon pepper
• 1/4 cup oil (vegetable or olive oil)

How to Make Marinated Cucumbers, Onions, and Tomatoes

Step 1: Prep the Veggies

1. In a large mixing bowl, combine the peeled and sliced cucumbers, onion slices, and tomato wedges.

For Step 2: Make the Marinade

2. In a separate bowl or jar, whisk together the vinegar, sugar, water, salt, pepper, and oil. Whisk until the sugar fully dissolves.

Step 3: Mix and Chill

3. Pour the marinade over the veggie mixture.
4. Gently toss until all the vegetables are evenly coated.
5. Cover the bowl with plastic wrap and refrigerate for at least 2 hours, or overnight for even better flavor.

Tip: Stir once during chilling to redistribute the marinade.

Flavor Tips to Make It Even Better

• Slice everything thinly and evenly so the marinade soaks in well.
• Add fresh dill or parsley for an herby touch.
• Want more zing? Toss in a little lemon juice or use red wine vinegar.
• Make it a meal by adding feta or mozzarella pearls.

What to Serve With This Simple Marinated Salad

This simple marinated cucumbers, onions and tomatoes dish fits just about any plate:

• BBQ chicken, ribs, or pulled pork
• Grilled salmon or shrimp
• Roasted veggie platters
• Turkey sandwiches or sliders
• Fried catfish or southern-style pork chops

Make-Ahead and Storage Tips

• Make ahead: This salad is even better the next day.
• Fridge-friendly: Store in an airtight container for 3–4 days.
• Freezing? Not recommended—the veggies get soggy.

Health Benefits of Marinated Cucumbers, Onions, and Tomatoes

Eating this salad means you’re getting:

• Hydration from the cucumbers
• Vitamin C from fresh tomatoes
• Antioxidants from onions and vinegar
• Low calorie, high flavor goodness with every bite

Related Recipes You’ll Love

• The ultimate Greek salad recipe
• Shrimp avocado salad – a protein-packed summer delight
• Refreshing strawberry spinach salad with balsamic glaze

Save This Recipe on Pinterest

Want more recipes like this? Follow Ritzy Recipes on Pinterest and pin your favorites so you can come back any time.

Final Thoughts

If you’re looking for a crowd-pleasing side that’s crisp, cool, and full of nostalgic summer vibes, you’ve got to try this Marinated Cucumbers, Onions, and Tomatoes salad. It’s simple, flavorful, and takes just minutes to put together. Perfect for cookouts, family dinners, or just when you want something fresh in the fridge.

Give it a try and let me know in the comments or on Pinterest how you served it—did you add herbs? Cheese? Let’s inspire each other!

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