Add oil to a medium skillet or saute pan over medium heat. Cook onions and celery in oil until tender, but not browned. Add garlic, tomatoes, Worcestershire sauce, salt, and chili powder to the cooked onions and celery and simmer uncovered for 45 minutes.
Add shrimp and green pepper. Cover and simmer for five minutes.
Notes
Shrimp Creole tastes delicious when served over cooked rice.Make-Ahead:Prepare the shrimp creole and allow it to cool. Cover tightly with wrap and store in the refrigerator for up to 3 days. To serve, remove from the refrigerator and reheat gently in a saucepan to 165 F. Freezer Friendly: Transfer any leftovers to a freezer-safe container and freeze for up to 3 months. Reheat gently in a saucepan to 165 degrees Fahrenheit. *It is not advised to reheat in the microwave as the shrimp may turn tough and rubbery. It is best to reheat gently in a saucepan.