Macaroni, mayonnaise, sour cream, Dijon mustard, lemon juice, garlic powder, onion powder, salt, black pepper, canned tuna, celery, red onion, green bell pepper, fresh parsley.
Cook the macaroni according to package directions, then drain and rinse with cold water.
Whisk together mayonnaise, sour cream, Dijon mustard, lemon juice, garlic powder, onion powder, salt, and black pepper in a mixing bowl.
Transfer the cooked macaroni to a large mixing bowl and add drained tuna, chopped celery, red onion, green bell pepper, and fresh parsley.
Stir all ingredients together, then add the prepared dressing and mix until well coated.
Cover the bowl with plastic wrap and refrigerate for an hour to let flavors meld.
After chilling, give the salad one last stir before serving.
Enjoy this classic Tuna Macaroni Salad as a side dish or light meal, perfect for any gathering or summer BBQ.