Seafood Gumbo is a delicious and flavorful Creole dish that originated in Louisiana. It typically consists of a thick stew-like base made with a roux (butter and flour mixture), vegetables (such as onions, bell peppers, and celery), a variety of seafood (like shrimp, crab, and sometimes fish or oysters), and seasonings like Cajun spices, bay leaves, and thyme. It's often served over rice and is a popular dish in Southern cuisine.
In a large pot, heat the vegetable oil over medium heat. Add the flour and stir constantly to make a dark roux, about 15-20 minutes.
Add the diced onion, bell pepper, celery, and garlic to the roux. Cook for about 5 minutes until the vegetables soften.
Slowly pour in the seafood or chicken broth while stirring to prevent lumps. Add the diced tomatoes, Cajun seasoning, thyme, bay leaf, salt, and pepper. Bring to a simmer.
Add the shrimp, crab meat, and fish to the pot. Simmer for about 10-15 minutes until the seafood is cooked through.
Taste and adjust seasoning if needed. Remove the bay leaf.
Serve the seafood gumbo over cooked rice and garnish with chopped green onions.