01 - Cook pasta according to package directions until al dente. Drain thoroughly and rinse under cold water to halt cooking. Transfer to a large bowl and allow to cool completely.
02 - In a separate mixing bowl, whisk together sour cream, mayonnaise, and ranch seasoning until completely smooth and well combined.
03 - Pour dressing over cooled pasta and fold in cheddar cheese, crispy bacon crumbles, thawed peas, and sliced green onions. Toss gently until evenly distributed.
04 - Refrigerate pasta salad for at least 1 hour to allow flavors to meld. Garnish with additional bacon, cheese, or green onions if desired. Serve chilled.