01 - Cook pasta according to package instructions until al dente. Drain thoroughly, rinse under cold water to stop cooking, and set aside to cool completely.
02 - In a large mixing bowl, whisk together sour cream, mayonnaise, and ranch seasoning mix until completely smooth and well combined.
03 - Add cooled pasta to the dressing. Fold in shredded cheddar cheese, crispy bacon crumbles, thawed peas, and sliced green onions. Toss gently but thoroughly to coat all ingredients evenly.
04 - Cover and refrigerate pasta salad for at least 1 hour, allowing flavors to meld and develop. The salad tastes best when thoroughly chilled.
05 - Before serving, garnish with additional bacon, cheddar cheese, or green onions if desired. Serve cold alongside grilled meats, barbecue, or as a standalone dish.