In a large pot over medium heat, melt the butter. Add the onion, celery, bell pepper, and garlic and cook until softened, about 5 minutes.
Add the flour and cook for an additional 2 minutes, stirring constantly.
Add the stock, potatoes, crawfish tails, Creole seasoning, cayenne pepper, thyme, smoked paprika, and bay leaves. Bring to a boil, reduce the heat, and simmer for 20 minutes.
Stir in the half-and-half and season with salt and pepper. Simmer for 5 more minutes.
Serve with a sprinkle of fresh parsley and a crusty French bread.
Interesting Facts
Crawfish Chowder has been a traditional dish in Louisiana for centuries.
Crawfish tails are the most flavorful part of the crawfish.
Crawfish Chowder is often served with a dollop of sour cream.
This chowder can also be made with shrimp or crab.