Roux: In a heavy skillet, combine oil with flour and cook over medium heat stirring constantly until dark brown in color. Immediately remove from heat. Roux will continue to cook, stir occasionally. Be careful not to burn your roux or the final dish will taste bitter.
Gumbo: In a large Dutch oven pot, melt butter then add onions, garlic, peppers, and celery. Cook over medium heat on stove until tender, about 5 minutes. Add sausage and tasso and cook for 5 minutes on medium-low heat. Stir in seafood stock, roux, and lemon juice. Bring to a boil. Add cayenne pepper, hot sauce, garlic, salt, rice, shrimp, crab meat, and okra. Simmer on medium heat until seafood is cooked, about 5 minutes. Remove from heat. Add green onions and mix well. Pour into a greased 2 to 3-quart baking dish.
Topping: Preheat oven to 350 degrees F.
Open crescent rolls, separate each triangle and place on top of gumbo mixture. Bake in oven for 11 to 13 minutes or until golden brown. Sprinkle with chopped parsley, if desired.
A viewer or guest of the show, who may not be a professional cook, provided this recipe. It has not been tested for home use.