Salt the eggplant to remove bitterness; use good quality extra virgin olive oil; cook eggplant in batches to avoid steaming; reserve pasta water to create a silky sauce; choose short, ridged pasta shapes for best results; use vegetarian Parmesan for a plant-based dish. Variations include adding garlic and chili flakes, using fresh tomatoes for a saucier version, swapping herbs, adding protein like grilled chicken or chickpeas, or making it creamy with plant-based cream or coconut milk. Store leftovers in an airtight container in the refrigerator up to 3 days or freeze up to 1 month.