01 - Boil rotini or penne in salted water until al dente according to package directions. Drain, rinse under cold running water, and set aside to cool completely.
02 - In a large 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 until every piece is evenly coated.
04 - Gently fold in the halved cherry tomatoes, diced bell pepper, shredded cheddar, bacon bits, sliced green onions, and thawed peas.
05 - Mix until all components are evenly distributed. Taste and adjust seasoning as needed.
06 - Refrigerate for at least 30 minutes to allow flavors to meld before serving.