Vibrant Tomato Onion Balsamic Salad

Fresh & Easy Tomato and Onion Salad with Creamy Balsamic Vinaigrette: Your Perfect Summer Side

This vibrant Tomato and Onion Salad, generously drizzled with a rich and creamy balsamic vinaigrette, is the epitome of refreshing, delicious, and incredibly simple summer eating. Crafted with succulent, sun-ripened tomatoes, thinly sliced tangy red onions, and aromatic fresh basil, it’s a celebration of seasonal flavors. The star of the show, a homemade basil balsamic dressing, perfectly complements the freshness of the vegetables, transforming this humble salad into a dish you’ll crave all season long.

Bright and colorful chopped tomatoes, thinly sliced red onion, and fresh basil leaves artfully arranged on a white platter, with a small bowl of creamy balsamic dressing ready to be poured.
A medley of vibrant tomatoes, red onion, and fresh basil, ready for a creamy balsamic dressing.

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There’s nothing quite like the peak of tomato season. If you’re fortunate enough to have thriving tomato plants in your garden or on your patio, you know this is truly the most wonderful time of year for fresh produce. For those not growing their own, a trip to your local farmers market is highly recommended. It’s the absolute best way to source incredibly flavorful, ripe tomatoes, allowing you to create this simple yet unforgettable salad with just a handful of perfectly in-season ingredients.

Combining the natural sweetness of ripe tomatoes with the sharp bite of red onion, the fragrant notes of fresh basil, and a perfectly balanced tangy dressing, this balsamic tomato salad elevates any meal. It’s a dish that effortlessly brings all your summer salad dreams to life, offering a burst of flavor and a refreshing crunch in every bite.

Serve this delightful Tomato and Onion Salad as an elegant yet simple side dish. It pairs beautifully with a variety of main courses, enhancing flavors without overpowering them. Consider serving it alongside grilled favorites like Tofu Satay, hearty Black Bean Burgers, or crispy Baked Falafel Balls. Its versatility also makes it a fantastic accompaniment to roasted vegetables, pasta dishes, or even as a light lunch on its own.

Craving more fresh, vibrant salad recipes perfect for summer? Be sure to explore some of my other favorites: my sweet and savory Nectarine Salad, the refreshing Simple Arugula Salad with Avocado, a wholesome and Gluten-Free Tabbouleh, and the unique Summer Slaw with Ginger Miso Dressing. Each offers a distinct flavor profile to brighten your summer table.

Why You’ll Love This Easy Tomato and Onion Salad

This isn’t just another salad; it’s a testament to how simple, fresh ingredients can create something truly extraordinary. Here’s why this tomato and onion salad will become a staple in your summer kitchen:

  • Effortlessly Delicious: With minimal prep and no cooking required, you can whip up this gourmet-tasting salad in under 15 minutes.
  • Bursting with Freshness: It celebrates the peak flavors of ripe summer tomatoes and vibrant herbs, making every bite a refreshing experience.
  • Healthy & Nutritious: Packed with vitamins, antioxidants, and healthy fats from the olive oil in the dressing, it’s a guilt-free addition to any meal.
  • Incredibly Versatile: Perfect as a side, a light lunch, or even a base for adding protein. It adapts beautifully to various dietary preferences.
  • Crowd-Pleaser: The vibrant colors and irresistible flavors make it a favorite for potlucks, barbecues, and family dinners.

Ingredients and Substitutions for Your Fresh Tomato Salad

The beauty of this salad lies in its simplicity and the quality of its fresh ingredients. Here’s a closer look at what you’ll need and how you can adapt it to your taste:

Individual bowls containing small whole tomatoes, julienned basil leaves, thinly sliced red onion, and a glass pitcher filled with creamy balsamic dressing, all arranged on a wooden surface.
The fresh ingredients ready to be combined for this delightful salad.
  • Tomatoes: The foundation of this salad! While any combination of small cherry, grape, or pear tomatoes works beautifully, feel free to use larger heirloom or beefsteak tomatoes chopped into bite-sized pieces. The key is ripeness and variety for a beautiful presentation and complex flavor. Always aim for tomatoes kept at room temperature for optimal taste and texture.
  • Red Onion: Adds a sharp, piquant contrast to the sweet tomatoes and a lovely pop of color. For a milder flavor, you can briefly soak sliced red onion in cold water for 10-15 minutes, then drain thoroughly. Alternatively, substitute with milder green onions (scallions), spring onions, or delicate shallots.
  • Fresh Basil: Aromatic fresh herbs are non-negotiable for this tomato salad, and basil is its perfect partner. Its sweet, peppery notes are quintessential summer. If basil isn’t available, fresh oregano, thyme, flat-leaf parsley, or even cilantro could offer interesting alternative flavors, though basil remains the classic choice. Dried basil simply won’t deliver the same vibrant taste.
  • Creamy Balsamic Dressing: This luscious dressing ties all the flavors together. Made with high-quality balsamic vinegar, robust extra virgin olive oil, a touch of sweetness from a date, spicy Dijon mustard, fresh garlic, and seasoning (salt and black pepper), it’s blended to a creamy perfection. This tangy dressing perfectly cuts through the richness of the tomatoes and adds an irresistible depth. Making it yourself ensures the freshest, most vibrant flavor.

Best Tomatoes for Salads: How to Choose the Perfect Ones

Selecting the right tomatoes is crucial for a truly outstanding salad. The best tomatoes for salads are always fresh, perfectly ripe, and — this is important — have been kept at room temperature. Refrigeration can dull their flavor and ruin their texture. If you haven’t had the pleasure of planting your own, make it a point to visit a local farmer’s market. Here, you’ll often find varieties bursting with flavor that can’t be matched by supermarket alternatives. Look for local tomatoes at your favorite grocery store as well, especially during peak season.

  • Heirloom Tomatoes: These beauties come in an array of stunning colors – shades of red, pink, orange, and yellow – and irregular shapes. They are typically cherished for their lower acidity, meaty texture, and wonderfully sweet, complex flavors, making them absolutely perfect for a show-stopping salad.
  • Beefsteak Tomatoes: Large and deeply red, beefsteak tomatoes are renowned for their meaty flesh and abundant juiciness, delivering that rich, quintessential tomato flavor everyone loves. Slice them thick for a satisfying bite.
  • Plum Tomatoes: Offering a fantastic balance of sweet and savory notes, plum tomatoes (like Roma or San Marzano varieties) are lower in moisture and have a firm texture, making them ideal for a robust and tasty salad that won’t get watery.
  • Cherry Tomatoes: Small, round, and incredibly sweet, cherry tomatoes are a versatile choice. They come in red, orange, and yellow. Sungold cherry tomatoes are a personal favorite – typically deep yellow, slightly firm, and mostly sweet with just a hint of tang, they burst with flavor.
  • Grape Tomatoes: Similar to cherry tomatoes but usually oval-shaped, grape tomatoes are sweet and firm, making them super easy to slice in half for salads. They are most commonly found in vibrant red.
  • Pear Tomatoes: Quite possibly the unsung heroes of the tomato world! These small, yellow tomatoes are shaped like miniature pears and boast a uniquely sweet and subtly citrusy flavor. They are incredibly delicious and definitely worth seeking out or planting if you have the space.
  • Cocktail Tomatoes (also called Campari): Roughly the size of a golf ball, these are hybrids often grown in greenhouses and available year-round. While convenient, their flavor can be less intense than true seasonal varieties. In my humble opinion (IMHO), they are only truly worth buying during the winter months when other options are scarce.

How to Make The BEST Fresh Tomato and Onion Salad

Creating this delicious tomato and onion salad is incredibly straightforward. Follow these simple steps for a truly exceptional dish:

  1. Prepare the Creamy Balsamic Dressing: First and foremost, make the star dressing. You’ll need good quality olive oil, balsamic vinegar, fresh garlic, a handful of basil, salt, pepper, and one Medjool date for natural sweetness. Combine all ingredients in a blender or use an immersion blender to puree until smooth and creamy. Specific measurements for the dressing can be found in the detailed recipe card below. Once prepared, set the dressing aside, allowing the flavors to meld beautifully.
  2. A small glass pitcher filled with a creamy, deep yellow balsamic dressing, garnished with fresh basil leaves on the side, ready to be used.
    The creamy basil balsamic dressing, a key component of this fresh salad.
  3. Slice the Fresh Basil: Gather your fresh basil leaves. Stack them neatly on top of each other, then thinly slice them into beautiful julienne strips. This method maximizes their aromatic release and ensures lovely pieces throughout the salad. Remember, fresh basil delivers a vibrant flavor that dried basil simply cannot offer.
  4. Close-up shot of fresh basil leaves, some detached from their stems, stacked neatly and being thinly sliced with a knife on a cutting board, preparing them for the salad.
    Fresh basil being thinly sliced to unlock its full aroma.
  5. Prepare the Red Onion: Peel a small red onion and cut it in half lengthwise. Place the cut side down on your cutting board and make very thin slices. The thinner the slices, the more evenly the flavor will distribute, and the less overpowering the onion will be. Set these delicate slices aside with the basil.
  6. Chop the Tomatoes: Wash and prepare your tomatoes. Cut all tomatoes into roughly similar-sized, bite-sized pieces for consistent texture in every forkful. Smaller varieties like cherry or grape tomatoes can simply be halved or quartered. Larger tomatoes should be cored and then cubed. Don’t hesitate to use a variety of colors and sizes for a visually stunning salad!
  7. A cutting board displays an assortment of colorful chopped tomatoes, thinly sliced red onions, and strips of fresh basil, all prepped and ready to be combined.
    All the freshly chopped ingredients ready to be mixed.
  8. Combine and Dress the Salad: Grab a large mixing bowl or a beautiful serving platter. Gently layer the chopped tomatoes, sliced basil, and red onions.
  9. Vibrant yellow, orange, and red chopped tomatoes are mixed with delicate onion slices and fresh basil leaves in a pristine white serving bowl, showcasing the colorful medley.
    The colorful tomato and onion base, awaiting its creamy dressing.
  10. Drizzle and Toss: Pour about ¼ cup of the prepared creamy balsamic dressing over the layered ingredients.
  11. Creamy basil balsamic dressing being drizzled generously over a bowl filled with freshly chopped tomatoes, sliced onions, and aromatic basil, creating a visually appealing and flavorful mix.
    The creamy balsamic dressing being poured over the fresh ingredients.
  12. Mix and Season: Gently mix all the ingredients until the tomatoes, onions, and basil are evenly coated with the dressing. Taste for seasoning. Add more salt and freshly ground black pepper as desired, or a little more dressing if you prefer. Serve immediately at room temperature for the best flavor experience.
  13. A beautifully tossed tomato and onion salad resting in a white bowl, accompanied by salad tossers and a small pitcher of extra creamy balsamic dressing on the side.
    The finished salad, ready to be enjoyed.

Debra’s Pro Tips for Your Tomato and Onion Salad

Unlock even more potential from this delightful salad with these expert tips:

A close-up view of freshly chopped tomatoes, thinly sliced red onion, and vibrant pieces of fresh basil, all glistening with a creamy balsamic dressing.
The irresistible blend of fresh ingredients and creamy dressing.
  • Transform Leftovers into Delicious Sauce: Don’t let any leftover salad go to waste! It can be magically transformed into a rich, flavorful sauce. Simply pour the remaining salad into a small saucepan and heat gently over low to medium heat. If you enjoy a chunky sauce, serve it as is. For a smoother consistency, use an immersion blender to puree it directly in the pot. This versatile sauce is fantastic spooned over zucchini noodles, roasted eggplant, spread onto crusty bread slices for a simple appetizer, used as a quick pizza sauce, or even incorporated into my Zucchini Rollatini Recipe.
  • Dairy-Free Caprese Salad Inspiration: If you’re seeking a delicious dairy-free alternative to a classic Caprese salad, this fresh tomato salad recipe is your perfect base! Simply prepare the salad as directed, and instead of fresh mozzarella, add generous slices of ripe, creamy avocado. The avocado adds a wonderful richness and texture that beautifully complements the tomatoes and basil.
  • Storing Extra Dressing: The homemade creamy balsamic dressing is so good, you’ll want to have extra on hand! Store any remaining dressing in a small, airtight jar in the refrigerator. It will stay fresh for up to a week. For longer storage, you can even freeze it for up to three months. This versatile dressing is absolutely fabulous on a simple green salad, as a marinade, or drizzled over roasted vegetables.

Variations to Elevate Your Tomato and Onion Salad

This tomato and onion salad is wonderfully adaptable. Get creative and try these delicious variations:

  • Tomato Basil Pasta Salad: The only thing missing from this recipe is the pasta! Cook your favorite pasta variety (such as rotini, farfalle, or penne) according to package directions, then drain and cool slightly. Follow the recipe card for the tomato, onion, and basil mix, then toss everything together with the pasta and an extra drizzle of good quality olive oil for a satisfying meal.
  • Super Easy Tomato Basil Salad: For those days when simplicity is key, chop your tomatoes, onions, and basil as directed. Sprinkle generously with salt and pepper, then drizzle on some high-quality balsamic vinegar and just a touch of olive oil. Toss gently and enjoy this minimalist, yet incredibly flavorful, version.
  • Corn Avocado and Tomato Salad: Introduce even more summer goodness by adding fresh corn kernels (cut directly off the cob, raw, for a sweet crunch) and creamy, diced avocados. The addition of these ingredients transforms this into a heartier, even more vibrant salad, proving that tomato season just got EVEN BETTER!
  • Tomato Cucumber Basil Salad: Add a refreshing crispness to your salad by chopping Persian or English cucumbers into thick diagonal slices. Toss them with the rest of the ingredients for a wonderfully cool, crisp, and crunchy cucumber tomato salad – perfect for a hot day!
  • Bruschetta Salad: Take inspiration from classic bruschetta! Lightly toast slices of crusty bread (like a baguette or ciabatta), then rip or cut them into rustic pieces. Toss these toasted bread pieces well with your tomato salad just before serving. The bread will soak up some of the delicious dressing and tomato juices, creating a delightful texture. Finish with an additional sprinkle of fresh basil.

How to Serve and Store Your Fresh Tomato Salad

  • Serve: For the absolute best taste and texture, always serve this fresh tomato salad at room temperature. Chilling can dull the vibrant flavors of the tomatoes and basil. Remove it from the fridge about 15-30 minutes before serving if it was stored.
  • Store: You can store any leftover fresh tomato salad in an airtight container in the refrigerator for up to a week. However, for optimal flavor and texture, it truly tastes best when enjoyed in the first couple of days. The tomatoes will naturally release more juice over time, which can make the salad slightly softer.
  • Freeze: Absolutely not! Freezing this salad is highly discouraged. The fresh ingredients, especially the tomatoes and basil, will completely lose their delicate flavor and crisp texture due to ice crystal formation. When thawed, you’ll be left with a tasteless, mushy pile of ingredients that is far from appetizing. Please, don’t do it! Instead, if you find yourself with an abundance of leftovers, refer to my pro tip above on how to effortlessly transform it into a delicious, usable sauce.

More Fresh Tomato Recipes to Love

  • Fresh Chunky Tomato Salsa Recipe
  • Vegan Stuffed Tomatoes
  • Roasted Cherry Tomatoes with Fresh Herbs
  • Easy Grilled Ratatouille Salad Recipe

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📖 Recipe

Chopped fresh tomatoes with red onion and fresh basil and a creamy balsamic vinaigrette.

Tomato and Onion Salad

Author: Debra Klein
Nothing quite captures the essence of summer like chopped fresh tomatoes with vibrant red onion and aromatic fresh basil. But elevate that classic combo with a generous toss of creamy balsamic vinaigrette, and you truly have summer’s finest dish in all its glory. It’s a simple pleasure, perfected.

5 from 1 vote

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Prep Time 10 minutes

Course Salad, Side Dish
Cuisine American, Italian

Equipment

  • Immersion blender
  • Chef’s knife
  • Extra Large Bamboo Cutting Board

Ingredients

  

  • 2 cups chopped tomatoes
  • ½ small red onion thinly sliced
  • ¼ cup fresh basil thinly sliced
  • ¼ cup Basil Balsamic Dressing

Instructions

 

  • Prepare the Basil Balsamic Dressing as directed in the notes below or by clicking the link, and set aside.
  • If using large tomatoes, chop them into uniform bite-sized pieces. Smaller varieties like cherry, grape, or sungold pear-shaped tomatoes can be simply halved through the core for visual appeal and ease of eating.
  • Stack the fresh basil leaves and carefully slice them into thin julienne strips.
  • Peel and thinly slice the small red onion. Aim for very fine slices to ensure the onion flavor is well-distributed and not overpowering.
  • In a large bowl or on a serving platter, gently combine the chopped tomatoes, sliced basil, and red onion. Pour approximately ¼ cup of the creamy balsamic dressing over the ingredients and toss well until everything is evenly coated. Taste for seasoning, adding more salt, black pepper, or dressing as desired to achieve your perfect balance of flavors. Serve immediately at room temperature for the best taste experience.

Notes

For Basil Balsamic Dressing

To make this creamy, flavorful dressing, simply puree the following ingredients with a food processor or an immersion blender until smooth:

½ cup fresh basil leaves

½ cup extra virgin olive oil

3 tablespoons balsamic vinegar

¼ cup water

1 clove fresh garlic

1 teaspoon Dijon mustard

1 Medjool date (pitted)

½ teaspoon coarse sea salt

¼ teaspoon freshly ground black pepper

This recipe for Balsamic Dressing will yield approximately 1 cup, of which you’ll need about ¼ cup for this specific tomato salad recipe. For all the detailed instructions and more tips on preparing this fantastic dressing, please refer to the dedicated post: Basil Balsamic Vinaigrette.

Note

The nutrition calculations were done using online tools. To obtain the most accurate representation of the nutritional information in any given recipe, you should calculate the nutritional information with the actual ingredients you used. You are ultimately responsible for ensuring that any nutritional information is accurate, complete and useful.

Did you make this recipe? Please leave a review below, then snap a picture and tag me @dkhealthcoach or use hashtag #dkhealtcoach on Instagram so I can see it!!