Season the shrimp with 1 Tbsp of the Creole Seasoning.
Melt the butter in a large cast iron skillet, add the onions, bell pepper, and celery, saute until translucent.
Whisk in the flour to make a blonde roux, stirring constantly, about 3-5 minutes.
Stir in the remaining Creole Seasoning.
Add a small amount of the shrimp stock, stir well to form a paste, add the remaining stock gradually, whisking constantly.
Bring to a boil, then reduce to a simmer.
Add the tomatoes, garlic, Thyme, Worcestershire, and hot sauce, a little salt, black pepper, and Cayenne.
Simmer for 20-30 minutes.
Add the shrimp, green onions, and parsley, simmer for 10 minutes more or until the shrimp are cooked through.
Stir in the 3 Tbsp butter, and adjust the seasonings to taste.
Serve over Creole Boiled Rice.
