How to Make It
In a blender, working in batches, puree the tomatoes, bell pepper, onion, garlic, and coarsely chopped cucumber. Transfer to a bowl and stir in the oil, vinegar, 1½ teaspoons salt, and ½ teaspoon black pepper. Refrigerate at least ½ hour and up to 1 day.
Top the gazpacho with the parsley and finely chopped cucumber. Drizzle with additional oil and serve with the bread.