01 - Boil pasta in generously salted water until al dente according to package directions. Drain, rinse under cold running water, and spread out to cool completely.
02 - In a large mixing bowl, whisk together mayonnaise, sour cream, ranch seasoning packet, and 1 tablespoon of milk. Add remaining milk gradually if a thinner consistency is preferred.
03 - Add the cooled pasta to the dressing and toss thoroughly until every piece is evenly coated.
04 - Gently fold in the cherry tomatoes, diced bell pepper, shredded cheddar, bacon bits, sliced green onions, and thawed peas until uniformly distributed.
05 - Taste the salad and adjust salt, pepper, or additional dressing as needed to balance flavors.
06 - Cover and refrigerate for a minimum of 30 minutes to allow the flavors to meld and the dressing to fully penetrate the pasta.