In a large oval roasting pan or large pot, heat the vegetable oil on medium-high heat for 5 minutes.
Meanwhile, in a separate saucepot, add the chopped crawfish, butter, paprika, 2 quarts of the seafood stock and 2 ounces of the Creole seasoning, bring to a boil and lower to a simmer.
When the oil in the roasting pan is hot, stir in the flour and cook, stirring constantly, until the mixture is medium brown in color (a similar color to peanut butter). Turn off the heat and immediately add the onions, bell peppers and celery. Add the hot sauce, Worcestershire, black pepper, parsley flakes, granulated garlic, cayenne, basil, bay leaves and remaining 2 ounces Creole seasoning, stirring constantly. Add the tomato soup and remaining 8 quarts seafood stock and stir. Bring the mixture back to a boil over medium-high heat and simmer for 15 minutes, stirring. Add the crawfish and butter mixture and continue cooking for 30 minutes, stirring regularly. Stir in the cream of mushroom soup and simmer for another 30 minutes. Add the whole crawfish tails and remove from the heat.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Harold and Belle's, Los Angeles, CA