01 - Preheat grill to medium-high heat, approximately 375°F to 400°F.
02 - Place Cajun beef sausages on the preheated grill. Cook for 10 to 12 minutes, turning every 3 to 4 minutes, until well browned on all sides and cooked through to an internal temperature of 160°F. Remove from grill and let rest for 2 minutes.
03 - While sausages are grilling, split the baguettes open. Place cut-side down on the grill for 1 to 2 minutes until lightly crisp and golden.
04 - In a small mixing bowl, combine mayonnaise, Dijon mustard, Creole mustard, ketchup, minced parsley, hot sauce, paprika, garlic powder, onion powder, and lemon juice. Whisk thoroughly until completely smooth and well combined. Season with salt and black pepper to taste.
05 - Spread a generous layer of remoulade sauce on both cut sides of each toasted baguette. Layer the bottom half with shredded iceberg lettuce, tomato slices, dill pickle slices, and red onion slices. Place a grilled Cajun sausage on top of the vegetables.
06 - Close the sandwiches with the top half of the baguette. Press down gently to settle the ingredients. Serve immediately while the sausage is still warm and the bread is crisp.