02Meanwhile, heat a gas or charcoal grill or preheat the oven to 375 degrees. Brush the bread lightly on one side with olive oil. Grill the crostini on both sides until lightly browned or arrange the bread on a sheet pan and bake for 6 to 8 minutes. Allow to cool slightly.03Mound the tapenade on each toast, sprinkle with parsley, and serve.