Melt butter in a large, deep skillet or Dutch oven over medium-high heat. Once melted, add in olive oil and stir. Add in onion, celery and bell pepper and cook, stirring occasionally, until vegetables are tender – about 8 to 10 minutes.

Stir in tomatoes with their juices. Bring to a boil, reduce to a simmer and season with Creole seasoning, red chili powder, chopped fresh parsley and red pepper flakes. Cook for about 20 minutes.

Once the mixture is cooked, add shrimp and stir to combine. Cook for about 5 to 6 minutes, stirring often, until shrimp is cooked through. Remove from heat and serve spooned over cooked white rice or riced cauliflower. Garnish with additional fresh chopped parsley.

Adjust heat with Louisiana-style hot sauce after serving, as each person likes a different level of heat.