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Tomato and Onion Salad | Easy Fresh Summer Side Dish

This tomato and onion salad is simple, quick, and makes the most of those fresh, juicy tomatoes. Pair them with thinly sliced red onion, fresh herbs from the garden, and a tangy homemade vinaigrette, and you’ve got a dish that tastes like pure summer.

It’s the kind of salad you’ll find at backyard barbecues and church potlucks—right next to other classics like healthy broccoli salad, easy frozen green pea salad or fresh green bean salad. And every time I make it, I’m reminded that the best food doesn’t have to be complicated.

Tomato and onion salad served in a black bowl and garnished with fresh basil leaves.

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What Makes This Recipe Unique?

Here’s what makes this recipe stand out:

  • Seasonal - If you grow tomatoes, then you know they can come on strong, and you need recipes like this tomato and onion salad to use up your harvest.
  • Simple - No fancy grocery runs. Just tomatoes, onion, herbs, and a few pantry staples.
  • Versatile - Works with just about any main dish—from a hearty whole roasted chicken to a lighter creamy leek pasta, you can’t go wrong!
  • Quick and Easy - 10 minutes of prep, then the fridge does the rest.

Key Ingredients

Tomato onion salad ingredients: red wine vinegar, olive oil, parsley, basil, tomato, onion, and garlic.

For a full list of ingredients and measurements, check out the recipe card below.

  • Tomatoes - Heirlooms are wonderful, but honestly, any ripe, in-season tomato will shine here.
  • Onion - Red onions are mild and add a nice crunch without overpowering the dish.
  • Fresh Garlic - If you don’t have fresh garlic, freeze dried garlic works great, too.
  • Fresh Herbs - Basil and parsley are my go-to combo, but don’t be afraid to mix it up. 
  • Red Wine Vinaigrette - The vinegar brightens the tomato flavor and mellows the onion bite.

Variations to Try

Marinated herbed yogurt balls in a half gallon Mason jar filled with olive oil.

This is a flexible recipe—make it your own! Try adding:

Recipe Instructions

Halved tomatoes on a wooden cutting board.

Step 1: Chop tomatoes into bite-sized pieces.

Diced red onion on a cutting board with fresh basil leaves.

Step 2: Dice the onions.

Diced tomatoes in a mixing bowl.

Step 3: Gently toss chopped tomatoes and onion in a medium bowl.

Fresh herbs and vinaigrette dressing in a mixing bowl.

Step 4: Roughly chop the fresh herbs, mince the garlic, and whisk together in a separate small bowl with the vinegar, oil, salt, and pepper. 

Bird's eye view of tomato and onion salad served in a black bowl and garnished with fresh basil leaves.

Step 5: Pour the marinade over the tomatoes and onions and gently turn them to coat. Cover bowl and allow to marinate in the refrigerator for 1 to 2 hours before serving. Right before serving, top with additional herbs if desired.

Storage Instructions

While you can store leftover tomato and onion salad in an airtight container for up to two days, it tastes best when it is freshly made. 

FAQs

How to make onion and tomato salad?

Tomato and onion salad is as simple as chopping fresh tomatoes and onions, then tossing them with herbs and vinaigrette.

What is the 5-ingredient tomato salad recipe?

Tomatoes, onion, garlic, olive oil, and vinegar. That’s it!

Is tomato and onion salad good for you?

Yes! Tomatoes are rich in vitamins and antioxidants, and onions add minerals and natural compounds that support health.

The Homestead Kitchen

Homestead Kitchen Magazine Cover - Tomatoes Issue #48

This recipe for tomato and onion salad was featured in issue No.48 of the Homestead Kitchen magazine. If you are looking for a homesteading resource that can provide answers, guidance, encouragement, tips and tricks, or advice, this magazine was designed just for you. 

As new homesteaders, it took us a lot of trial and error to overcome feelings of inadequacy. Now, we have made it our mission to share our journey and knowledge with others to help them bypass some of those growing pains.

With the Homestead Kitchen magazine, you will be put on the fast track to homesteading with confidence as we share how to overcome the big obstacles, along with the little things that can make a huge impact on your success. Now, the Homestead Kitchen magazine is available in print! So subscribe today and start enjoying this magazine in the palm of your hand.

Tomato and onion salad served in a black bowl and garnished with fresh basil leaves.

Tomato and Onion Salad

This easy tomato and onion salad with fresh herbs and tangy vinaigrette is the perfect summer side dish—ready in 10 minutes with garden-fresh flavor.
5 from 1 vote
Print Pin
Course: Salad
Cuisine: American
Prep Time: 10 minutes
Chilling Time: 2 hours
Total Time: 2 hours 10 minutes
Servings: 6 Servings
Calories: 199kcal
Author: Carolyn Thomas
Cost: Varies

Equipment

Ingredients

  • 6 Large Tomatoes chopped
  • ½ Medium Red Onion diced
  • 1 Clove Garlic minced
  • 2 Tablespoons Fresh Parsley roughly chopped
  • 1 Tablespoon Fresh Basil roughly chopped
  • ¼ Cup Red Wine Vinegar
  • ½ Cup Olive Oil
  • Salt and Pepper to taste
  • Additional Fresh Herbs for serving

Instructions

  • Chop tomatoes into bite-sized pieces.
  • Dice the onions.
  • Gently toss chopped tomatoes and onion in a medium bowl.
  • Roughly chop the fresh herbs, mince the garlic, and whisk together in a separate small bowl with the vinegar, oil, salt, and pepper.
  • Pour the marinade over the tomatoes and onions and gently turn them to coat.
  • Cover bowl and allow to marinate in the refrigerator for 1 to 2 hours before serving.
  • Right before serving, top with additional herbs if desired.

Notes

Recipe Variations:
This is a flexible recipe—make it your own! Try adding:
Storage Instructions:
While you can store leftover tomato and onion salad in an airtight container for up to two days, it tastes best when it is freshly made.

Nutrition

Calories: 199kcal | Carbohydrates: 8g | Protein: 2g | Fat: 18g | Saturated Fat: 3g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 13g | Sodium: 11mg | Potassium: 459mg | Fiber: 2g | Sugar: 5g | Vitamin A: 1646IU | Vitamin C: 28mg | Calcium: 24mg | Iron: 1mg
Tried this recipe?We want to see! Tag @homesteadingfamily on Instagram.
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