Tomato and Onion Salad

Fresh tomato and onion salad drizzled with olive oil vinaigrette and topped with parsley on a white serving plate Pin Recipe
Fresh tomato and onion salad drizzled with olive oil vinaigrette and topped with parsley on a white serving plate | dishtrailblazer.com

This crisp, refreshing dish combines ripe tomatoes and thinly sliced red onions with a simple whisked dressing of extra-virgin olive oil, red wine vinegar, and lemon juice. Fresh parsley adds brightness, while a brief marinating time lets flavors meld beautifully.

Ready in just 10 minutes with no cooking required, this versatile side pairs wonderfully with grilled meats or Mediterranean-inspired meals. For milder onion flavor, soak slices in cold water beforehand, or add cucumbers and crumbled feta for extra variety.

There's something honest about a salad that lets ingredients speak for themselves. This tomato and onion combination came together during a heatwave when my kitchen felt like an oven and cooking anything seemed impossible. The sharp crunch of onion against juicy ripe tomatoes felt revolutionary in its simplicity.

I brought this to a friends backyard barbecue last summer, skeptical that such a simple dish would impress anyone next to grilled meats and elaborate sides. The plate was empty before I could even grab a serving spoon, and three people asked for the recipe before dessert was served.

Ingredients

  • 4 medium ripe tomatoes: Look for tomatoes that yield slightly to gentle pressure and smell like summer, these are the heart of the dish so choose them carefully
  • 1 large red onion: The sweetness of red onions works beautifully here, and thin slicing keeps them from overwhelming your palate
  • 2 tablespoons fresh parsley: Fresh herbs add a pop of color and a bright, clean flavor that dried versions can never quite achieve
  • 3 tablespoons extra-virgin olive oil: This ties everything together, so use a quality oil you'd happily drizzle on bread
  • 1 tablespoon red wine vinegar: Provides just enough acid to cut through the rich tomatoes without making you pucker
  • 1 teaspoon lemon juice: Adds brightness and helps the flavors wake each other up
  • ½ teaspoon salt: Essential for drawing out the tomatoes natural juices and amplifying their sweetness
  • ¼ teaspoon freshly ground black pepper: Freshly ground makes a noticeable difference in complexity and depth

Instructions

Layer your vegetables:
Arrange the tomatoes and onions in overlapping layers on your serving plate, thinking about how each bite will get both colors and flavors.
Whisk together the dressing:
Combine the olive oil, vinegar, lemon juice, salt, and pepper in a small bowl, whisking until the mixture becomes slightly thickened and emulsified.
Drizzle evenly:
Pour the dressing over the salad in a circular motion, making sure every slice gets some love rather than pooling in one spot.
Add the finishing touch:
Sprinkle the fresh parsley across the top, letting some fall into the crevices between tomatoes and onions for little bursts of herb flavor.
Let it rest:
Give the salad five minutes to hang out before serving, letting the vegetables soften slightly and absorb some of that dressing.
Sliced ripe tomatoes and red onions arranged in a vibrant salad with light dressing and fresh green parsley garnish Pin Recipe
Sliced ripe tomatoes and red onions arranged in a vibrant salad with light dressing and fresh green parsley garnish | dishtrailblazer.com

This recipe has become my go-to contribution to potlucks because it travels well and somehow feels fancy despite requiring zero cooking. There's genuine joy in watching people's faces light up when they realize how something so uncomplicated can taste this vibrant.

Making It Your Own

Sometimes I'll add sliced cucumbers for extra crunch or crumble feta on top for a creamy, salty contrast. The feta especially transforms this into more of a main dish rather than a side, perfect for those nights when you want something substantial but still light.

Serving Suggestions

This salad holds its own next to grilled chicken, fish, or even a hearty grain bowl. I've also discovered it makes an unexpected but perfect topping for crostini when you're entertaining and want something that looks impressive but takes virtually no effort.

Storage And Timing

While best eaten fresh, leftovers will keep in the refrigerator for a day, though the tomatoes will release more liquid and the texture becomes softer. Plan to toss any leftover salad with some additional greens to refresh it the next day.

  • Cut your tomatoes with a sharp knife to avoid crushing them and losing those precious juices
  • Let the tomatoes come to room temperature before slicing if they've been refrigerated
  • Add the parsley right before serving so it stays vibrant and doesn't wilt
Mediterranean-style tomato and onion salad marinated in tangy vinaigrette, featuring crisp red onion rings and juicy tomato slices Pin Recipe
Mediterranean-style tomato and onion salad marinated in tangy vinaigrette, featuring crisp red onion rings and juicy tomato slices | dishtrailblazer.com

Sometimes the simplest dishes are the ones that remind us why we fell in love with cooking in the first place, no fancy techniques required.

Recipe FAQs

Allow the salad to marinate for about 5 minutes after drizzling the dressing. This brief resting period lets the tomatoes and onions absorb the vinaigrette flavors while maintaining their crisp texture.

For best results, prepare and dress this salad just before serving. The vegetables can be sliced ahead, but add the dressing shortly before serving to prevent the tomatoes from becoming too soft.

Soak the thinly sliced red onion in cold water for 10 minutes before assembling the salad. This simple step reduces the sharp bite while keeping the onion's crisp texture and vibrant color.

Sliced cucumbers, crumbled feta cheese, or Kalamata olives make excellent additions. You could also add fresh basil or mint instead of parsley, or use balsamic vinegar in place of red wine vinegar.

This versatile side complements grilled chicken, steak, or fish beautifully. It also works wonderfully alongside other Mediterranean dishes like hummus, grilled vegetables, or as part of a mezze platter.

Tomato and Onion Salad

Crisp tomatoes and sharp onions with light vinaigrette, ready in 10 minutes.

Prep 10m
0
Total 10m
Servings 4
Difficulty Easy

Ingredients

Vegetables

  • 4 medium ripe tomatoes, sliced
  • 1 large red onion, thinly sliced
  • 2 tablespoons fresh parsley, chopped

Dressing

  • 3 tablespoons extra-virgin olive oil
  • 1 tablespoon red wine vinegar
  • 1 teaspoon lemon juice
  • ½ teaspoon salt
  • ¼ teaspoon freshly ground black pepper

Instructions

1
Arrange Vegetables: Arrange the sliced tomatoes and onions on a large serving plate
2
Prepare Vinaigrette: In a small bowl, whisk together olive oil, red wine vinegar, lemon juice, salt, and black pepper to create the dressing
3
Dress the Salad: Drizzle the dressing evenly over the tomatoes and onions
4
Garnish: Sprinkle chopped parsley on top for freshness
5
Marinate and Serve: Allow the salad to marinate for 5 minutes before serving for optimal flavor
Additional Information

Equipment Needed

  • Sharp knife
  • Cutting board
  • Small mixing bowl
  • Whisk or fork
  • Serving platter

Nutrition (Per Serving)

Calories 110
Protein 1g
Carbs 9g
Fat 8g

Allergy Information

  • Naturally free from common allergens
  • If adding cheeses or other toppings, check for dairy or other allergens
Sabrina Hart

Passionate home cook sharing approachable, family-friendly recipes and kitchen tips.