Watercress Salad with Tomatoes and Feta

Ingredients

• 3 tablespoons extra-virgin olive oil
• 3 tablespoons sherry vinegar
• 2 tablespoons thinly sliced chiffonaded or chopped fresh basil
• 1 tablespoon minced parsley
• 1 teaspoon kosher salt
• ½ teaspoon freshly ground black pepper
• 1 red onion ((quartered and thinly sliced))
• 2 pints cherry or grape tomatoes ((halved))
• 2 cups roughly chopped watercress
• 1 cup halved black olives
• 1 cup diced feta cheese