1 (14.5 oz.) diced tomatoes with juice
In a Dutch oven or large heavy pot, heat half of the butter over medium-high heat. Add the flour, reduce the heat to medium, and cook, stirring constantly with a large wooden spoon, to make a thick roux almost the color of milk chocolate, 15 to 20 minutes.

Add the onions and celery seed, cook, stirring, for 1 minute. Add the garlic and bay leaves, and cook, stirring, for 30 seconds.

Place the tomato paste in a small bowl and whisk in the sherry to blend. Add to the pot, and cook, stirring, for 30 seconds. Add the stock, and whisk to blend. Add the tomatoes and their juices, the sugar, salt, black pepper, and red pepper, and cook, stirring, occasionally, for 20 to 25 minutes.

Add 2 cups of the court-bouillon and bring to a simmer. Season the shrimp, crab meat, and oysters with Creole Seasoning. Add the shrimp and cook for 3 minutes. Add the oysters and cook until the oysters curl, 1 to 2 minutes. Add heavy whipping cream and boil for 1 minute. Add last 4 oz. of butter.
Divide equally between 2 large soup bowls, and repeat with the remaining ingredients in 2 batches. Spoon 1/2 cup of rice into the center of each bowl and serve immediately.