Caponata is a traditional Sicilian dish made with eggplant, tomatoes, onions, capers, olives, and vinegar. Using a food processor, you can easily chop the eggplant, tomatoes, and onions into small, uniform pieces. Sauté the vegetables with the other ingredients until tender and flavorful. Serve the Caponata as a side dish or spread it on toasted bread for a tasty vegetarian appetizer.