This refreshing tomato salad is elevated with a flavorful tarragon pesto and crunchy pumpernickel croutons. The juicy tomatoes are paired with a tangy and herbaceous pesto, made with fresh tarragon, garlic, lemon juice, and olive oil. The pumpernickel croutons add a delightful crunch and a hint of sweetness to the salad. This dish is perfect as a light lunch or a side dish for a summer barbecue.