01 - Cook pasta according to package directions until al dente. Drain thoroughly and rinse under cold running water to stop cooking process. Transfer to a large bowl and allow to cool completely.
02 - In a separate mixing bowl, whisk together sour cream, mayonnaise, and ranch seasoning packet until completely smooth and well blended. Set aside.
03 - Pour the dressing over cooled pasta and toss to coat evenly. Gently fold in shredded cheddar cheese, crispy bacon crumbles, thawed peas, and sliced green onions until all ingredients are evenly distributed.
04 - Cover the pasta salad and refrigerate for at least 1 hour, or up to overnight, to allow flavors to meld and develop. This step is essential for optimal taste.
05 - Remove from refrigerator and give it a quick stir. Garnish with additional bacon bits, extra cheddar cheese, or fresh green onion slices if desired. Serve chilled.