01 - Prepare pasta according to package directions. Drain thoroughly, rinse under cold water to stop cooking process, and set aside to cool completely.
02 - Heat skillet over medium heat. Brown ground beef or turkey, breaking apart with spoon while cooking, until fully browned. Drain excess fat and allow to cool.
03 - In large mixing bowl, combine cooled pasta, cooked meat (if using), cherry tomatoes, black beans, corn, red onion, bell pepper, lettuce, cheese, and black olives.
04 - Whisk together sour cream, mayonnaise, taco seasoning, lime juice, salt, and pepper in small bowl until smooth and well combined.
05 - Pour dressing over salad mixture. Toss gently until all ingredients are evenly coated with creamy dressing.
06 - Fold in crushed tortilla chips and fresh cilantro immediately before serving to maintain texture and freshness.
07 - Serve chilled or at room temperature. Best enjoyed same day for optimal texture and flavor.