Finely chop the green onions, red bell pepper, carrot, onion, celery, garlic, and fresh herbs. Set aside. Using a food processor or rolling pin, crush the buttery crackers into fine crumbs. This will act as the binder and crunchy element in your crab cakes.
In a small bowl, mix together the Creole seasoning, dried dill, oregano, parsley flakes, dried basil, dried thyme, and ground black pepper.
In a large mixing bowl, gently fold together the lump crab meat, beaten egg, crushed crackers, chopped vegetables, green onions, and the mixed dry seasonings. Be careful not to break the crab meat too much; the texture is important.
Divide the mixture evenly and shape into 6 medium-sized patties, pressing gently to hold them together.
Heat the vegetable oil and butter together in a skillet over medium heat. Once hot, carefully place the crab cakes in the pan. Cook for about 6-7 minutes per side or until golden brown and cooked through. Avoid overcrowding the pan; cook in batches if needed.
While the crab cakes cook, whisk together the mayonnaise, chopped fresh herbs, lemon juice, hot sauce, cracked black pepper, and a pinch of salt in a small bowl. Adjust seasoning to taste.
Plate the hot Cajun Crab Cake Recipe and serve immediately with the spicy Cajun dipping sauce on the side for dipping.