Marinate the Shrimp: In a mixing bowl, combine the cooked shrimp with lemon juice, olive oil, granulated garlic, and ground cumin. Allow to marinate for 10 minutes.

Sauté the Shrimp: Heat a skillet over medium heat and add the marinated shrimp. Sauté for about 5 minutes until pink and opaque. Remove from heat and cool.

Prepare the Dressing: In a bowl, whisk together sour cream, mayonnaise, Worcestershire sauce, brown sugar, mustard powder, salt, pepper, granulated garlic, and cumin until smooth.

Combine the Salad Ingredients: In a large bowl, combine cooked macaroni, sautéed shrimp, shallot, celery, and parsley. Fold in the creamy dressing until well-coated.

Chill and Serve: Cover with plastic wrap and refrigerate for at least 30 minutes before serving.