Add ¼ cup of vegetable oil to a heavy bottom pot and place it on the stovetop. Heat the oil for 1 minute on high heat.
Once the oil is heated, sprinkle ¼ cup of flour into it. Reduce the heat to medium and stir continuously to prevent lumps from forming.
When the roux turns brown in color, add the Holy Trinity and stir on heat for 3 minutes until the vegetables are soft. The Holy Trinity consists of chopped green bell pepper, celery, and onions.
Add the minced garlic and cook for 30 seconds until it is fragrant.
Next, add 2 cups of shrimp stock and stir to dissolve the fried flour.
After that, add the chopped tomatoes together with other ingredients: bay leaves, creole seasoning, dried thyme, paprika, Worcestershire sauce, and salt. Stir to combine.
Cover and cook for 15 minutes and then add chopped spring onions and hot sauce (if you like it spicy).
Also, add the shrimp or crawfish. Stir to combine; cover and cook for 10 minutes on low heat.
Add 2 tbsp of butter for more flavor and allow it to dissolve. Cover and cook for a minute and your homemade etouffee is ready. You can take out the bay leaves and serve over boiled rice.