01 - Boil pasta in salted water until al dente, following package directions. Drain in a colander, rinse under cold running water, and set aside to cool completely.
02 - In a large mixing bowl, whisk together mayonnaise, sour cream, ranch seasoning mix, and 1 tablespoon of milk. Add a second tablespoon of milk 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 ranch seasoning as needed.
06 - Cover and refrigerate for at least 30 minutes to allow flavors to meld before serving.