Whip up this quick appetizer as a savory snack that's rich in heart-healthy fats.
Remove pits from olives. Using a mini-food processor, combine olives with toasted walnuts, olive oil, grated Parmesan, lemon zest, and a squeeze of lemon juice. Spread about 1 tablespoon tapenade over toasted crostini (or use to top potatoes).
