This simple Tomato Onion Salad is the essence of summer sides: big, juicy chunks of ripe tomato, thin sharp slices of onion, and a quick vinaigrette that brings everything together. It’s bright, fast to make, and full of flavor from red wine vinegar and Italian seasoning. Serve it alongside grilled meats, pasta, or with crusty bread to soak up the dressing.
Fresh Tomato Onion Salad
This is one of those deceptively simple dishes that always gets eaten quickly. The vinaigrette tames the raw bite of the onion without turning it mushy, and sitting a short time allows the tomatoes to release their juices so the dressing becomes even more delicious. Use the best tomatoes you can find and a sturdy onion—this salad depends on ingredient quality more than technique.
Why You’ll Love This Dish
- Quick & Easy — Ready in minutes using basic pantry staples.
- Fresh & Flavorful — Tomato, onion, vinegar, and herbs make a bright combination.
- No Cooking Required — Ideal for hot weather when you don’t want to use the stove.
- Makes-Ahead Friendly — Flavor improves after 30 minutes of resting, but don’t let it sit for many hours.
- Versatile — Pairs well with grilled steak, chicken, burgers, pasta, or simply bread.
Recipe Shopping List
Before you start, check that you have these simple ingredients. For exact quantities see the recipe card further down.
- Ripe beefsteak tomato — meaty and juicy; heirlooms or vine-ripened work well.
- Medium onion — red for color and bite, white or sweet for a milder result.
- Red wine vinegar — provides tang; white wine or apple cider vinegar can substitute.
- Olive oil — adds richness and carries the flavors.
- Italian seasoning — or a mix of oregano and basil if preferred.
- Salt and black pepper — essential for balancing and drawing out juices.
How to Make This Tomato Onion Salad
The method is straightforward. Below is a clear overview so you know what to expect; follow the recipe card for exact measurements and timing.
- Prep the vegetables: Cut the tomato into large chunks and slice the onion thinly.
- Make the dressing: Combine red wine vinegar, olive oil, Italian seasoning, salt, and pepper in a jar and shake or whisk until slightly emulsified.
- Toss together: Gently combine tomatoes and onions in a bowl, pour the dressing over them, and toss to coat.
- Rest: Let the salad sit 30 minutes at room temperature to allow flavors to meld and tomatoes to release juices.
- Serve: Give the salad a quick toss and serve as a side or alongside crusty bread to soak up the dressing.
Recipe FAQ
Yes — prepare it up to a few hours in advance and keep it chilled. Don’t let it sit for many hours at room temperature because the tomatoes will break down. Stir again briefly before serving.
Which onion is best?
Red onions offer more color and bite, while white or sweet onions mellow more during marinating. Choose based on the level of sharpness you prefer.
Can I add other vegetables?
Absolutely. Cucumbers, bell peppers, or fresh herbs like parsley or basil are great additions for extra texture and flavor.
What if I don’t have red wine vinegar?
White wine vinegar, sherry vinegar, or apple cider vinegar are suitable substitutes. Avoid overly sweet vinegars that could overpower the salad.
Serve This With
- Smoked or grilled chicken — a bright counterpoint to rich smoky flavors.
- Grilled steaks — balances hearty grilled meat with fresh acidity.
- Italian pasta salad — pairs as a lighter vegetable side.
- Grilled sausages or brats — a crisp, tangy complement to savory links.
This tomato onion salad is simple, sturdy, and full of summer flavor. It’s a low-effort side that tastes homemade and fresh, ideal for backyard cookouts or light weekday dinners. Make it once and it will likely become a go-to all season.
Steakhouse Tomato Onion Salad — Recipe Card
Yield: 4 servings · Prep time: 5 minutes · Total time: 5 minutes
Ingredients
- 1 large ripe beefsteak tomato
- 1 medium onion
- 2 tablespoons red wine vinegar
- 4 tablespoons olive oil
- 1 teaspoon Italian seasoning
- ½ teaspoon black pepper
- ½ teaspoon salt (adjust to taste)
Instructions
- Cut the tomato into large chunks and thinly slice the onion.
- Combine the vinegar, olive oil, Italian seasoning, salt, and pepper in a jar and shake or whisk to combine.
- Gently toss the dressing with the tomatoes and onions until coated.
- Let the salad rest for about 30 minutes to allow the flavors to meld. Stir again just before serving.
Nutrition (per serving)
Approximate values: Calories 36 · Total Fat 2g · Saturated Fat 0g · Unsaturated Fat 1g · Sodium 824mg · Carbohydrates 5g · Fiber 1g · Sugar 2g · Protein 1g
Nutrition information is an estimate. If you need precise values for dietary or medical reasons, consult a trusted nutrition resource.
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