Follow these simple steps to create your Creamy Pasta Salad:

1. Cook Pasta: Bring a large pot of salted water to a boil. Add the pasta and cook according to package instructions until al dente. Drain and rinse under cold water to cool.
2. Prepare Vegetables: While the pasta cooks, chop the cherry tomatoes, cucumber, bell pepper, shredded carrots, and red onion. Place them in a large mixing bowl.
3. Thaw Peas: If using frozen peas, place them in a small bowl of warm water for a few minutes to thaw. Drain and set aside.
4. Mix Dressing: In a separate bowl, combine mayonnaise, sour cream, Dijon mustard, apple cider vinegar, garlic powder, salt, and pepper. Whisk until smooth.
5. Combine Ingredients: Once the pasta is cool, add it to the mixing bowl with the chopped vegetables. Then, fold in the peas.
6. Add Dressing: Pour the dressing over the pasta and vegetable mixture. Stir well to ensure everything is evenly coated.
7. Taste and Adjust: Sample the salad and adjust the seasoning if needed, adding more salt, pepper, or vinegar for acidity.
8. Chill: Cover the salad with plastic wrap or pour it into an airtight container. Refrigerate for at least 30 minutes to allow flavors to meld.
9. Garnish: Just before serving, garnish with chopped parsley for a fresh touch.

These steps will help you assemble a delicious and creamy salad quickly.