In a large pot, bring salted water to a rolling boil over high heat. Add 300 g of penne pasta and cook it for about 10-12 minutes until al dente. Drain and rinse under cold water to stop cooking.

In a mixing bowl, combine 1 cup of mayonnaise, 1/2 cup of sour cream, 2 tablespoons of Cajun seasoning, 1 tablespoon of lemon juice, 1 teaspoon of garlic powder, and 1 teaspoon of paprika. Whisk until smooth.

Gently fold in the cooled pasta, 250 g crab meat, 1 cup bell peppers, 1/2 cup red onion, and 1/2 cup celery into the dressing until all ingredients are coated.

Cover the bowl and refrigerate for at least 1 hour to allow flavors to meld.

Before serving, stir gently and adjust seasoning with salt and pepper. Garnish with parsley and extra paprika.

Serve chilled in a large bowl or individual servings. Perfect for summer gatherings!