This Italian appetizer salad is incredibly versatile. Feel free to customize it with your favorite antipasto items like marinated artichoke hearts, chickpeas, or cubes of provolone cheese. For a bit of heat, you can add a pinch of red pepper flakes to the dressing. Store any leftovers in an airtight container in the refrigerator for up to 2 days, keeping the dressing separate until ready to serve for best freshness.