01 -
Bring a large pot of salted water to a boil and cook rotini pasta until al dente. Drain and rinse under cold water; set aside.
02 -
If using raw shrimp, cook until pink and firm, then cool and halve larger pieces. If pre-cooked, thaw and pat dry.
03 -
In a small bowl, whisk together mayonnaise, sour cream, Dijon mustard, lemon juice, chopped dill, salt, and black pepper.
04 -
In a large bowl, combine cooked pasta, shrimp, peas, red onion, bell peppers, and celery.
05 -
Pour the dressing over the pasta mixture and toss gently until evenly coated.
06 -
Cover and refrigerate for at least 1 hour before serving. Garnish with additional dill if desired.