Spoon this flavorful topping over Simple Crostini or toast from a country-style loaf. Each recipe makes enough for 16 small or 8 large crostini.
With a sharp knife, slice away peel and pith of lemon. Cut flesh into segments; roughly chop and transfer to a medium bowl. Add olives, red onion, celery, sugar, olive oil, and parsley. Season with salt and pepper and stir to combine. To serve, divide relish among crostini.