In a heavy bottom dutch oven, add olive oil and bring to medium heat
Once the oil is glossy and hot, add sliced andouille sausage to the pot and brown on both sides, about 2 minutes per side
Once the sausage is brown and fragrant, remove from the pot and set aside in a bowl
Remove any excess oil from the sausage leaving about a tbsp of oil
Reduce the heat to medium and saute the bell peppers, onion, and celery until translucent, about 4 minutes. Continue to stir to ensure the veggies don't brown
Once the vegetables are fragrant and translucent, add garlic paste and tomato paste, stir to incorporate
Next, add the washed rice to the veggie mixture and mix well to incorporate and allow it to toast for 30 seconds, while the rice is toasting season with salt, pepper, seafood seasoning, cajun seasoning, smoked paprika, onion powder, onion powder and Italian seasoning
To the rice and veggies, add crushed tomatoes and seafood broth and worcheshire sauce, Mix well to combine and taste broth for salt and adjust accordingly, this is the last time you'll be able to adjust the flavor
Add the sausage back to the rice and stir, cover with a tight fitting lid and reduce the heat to medium low and allow the rice to cook until about 75% done
After about 25 minutes the majority of the liquid has evaporated from the rice but it will still have a wet looking texture because it needs about another 5 minutes to steam
At this point, add your shrimp and crab meat to the rice and give everything another sprinkling of cajun seasoning, fold to combine (ensure you're folding from the bottom of the pot to the top because the bottom of the rice will start to stick because of the crushed tomatoes, don't worry, those crispy bits are to die for!)
Once you have mixed the seafood in and seasoned again, cover and allow the shrimp and crab to cook for 5 minutes
The shrimp is done when they turn pink an are no longer translucent
After 5 minutes, turn off the heat and remove the pot from the stove, because you're using a cast iron dutch pot it will retain heat and the dish will keep cooking if you leave it on the stove, you don't want to overcook your seafood.
Remove from the stove and serve warm with fresh parsley and sliced green onions