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Tomato Onion Salad on white oval platter.
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4.60 from 10 votes

Tomato and Onion Salad

This easy Tomato and Onion Salad is the tomato salad to make this summer and every summer.  Fresh tomatoes take center stage with a supporting cast of a delicious light vinaigrette, thinly sliced red onion, capers for a salty, briny kick and lots of fresh basil!
Prep Time20 minutes
Total Time20 minutes
Course: Side Dishes - Salads
Cuisine: Italian
Diet: Diabetic, Gluten Free, Vegan, Vegetarian
Servings: 4

Ingredients

  • 1/3 cup extra-virgin olive oil
  • 2 tablespoons red wine vinegar
  • 2 teaspoons Dijon mustard
  • 2 cloves garlic minced
  • 1/2 teaspoon sugar or to taste
  • 1 teaspoon salt or to taste
  • Freshly ground black pepper to taste
  • 4-5 medium tomatoes sliced
  • 1/2 medium red onion thinly sliced
  • 2 tablespoons drained capers
  • 4 sprigs fresh basil leaves only, torn with some left intact for garnish

Instructions

  • Whisk together olive oil, red wine vinegar, mustard, garlic, sugar, salt and black pepper to taste.
  • Place tomatoes on a serving platter.
  • Top with red onion and capers.
  • Drizzle dressing over tomatoes.
  • Garnish with torn basil and whole basil leaves. Serve immediately.

Notes

TIP:
  • When making a vinaigrette, all the ingredients--especially the oil--should be at room temperature because cold ingredients make it difficult to create an emulsion.
  • Let the vinaigrette stand at room temperature for the flavors to meld while making the rest of your salad.
MAKE AHEAD:
  • The vinaigrette can be made up to three days ahead of time, but slice the tomatoes and onions and tear the basil when you're almost ready to serve the salad.

Nutrition

Serving: 1 | Calories: 195kcal | Carbohydrates: 7g | Protein: 2g | Fat: 18g | Saturated Fat: 3g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 13g | Sodium: 728mg | Potassium: 332mg | Fiber: 2g | Sugar: 4g | Vitamin A: 1138IU | Vitamin C: 19mg | Calcium: 26mg | Iron: 1mg