01 - Arrange the sliced tomatoes and onions on a large serving plate in an alternating pattern for visual appeal.
02 - In a small bowl, whisk together olive oil, red wine vinegar, lemon juice, salt, and black pepper until fully emulsified.
03 - Drizzle the dressing evenly over the arranged tomatoes and onions, ensuring all pieces receive coating.
04 - Sprinkle chopped parsley generously across the top for fresh color and herbaceous flavor.
05 - Let the salad rest at room temperature for 5 minutes to allow flavors to meld before serving.