Set the pot to saute and add half of the oil. When the oil is hot add the sausage and brown for around 5 minutes. Remove the sausages and set aside.
Add the remaining oil followed by the chicken. Cook until browned whilst scraping up any remaining sausage.
Now add the onion, garlic, pepper and celery followed by the cajun seasoning and thyme.
Season to taste and then add the rice, tomatoes and stock. Stir well and deglaze the pot if necessary.
Put the lid on and set to high pressure for 6 minutes. When the time is up leave under pressure for another 6 minutes before doing a quick release.
When the pin drops remove the lid and stir together. Add the sausages, prawns (shrimp) and spring (green) onions. Stir well together and then put the lid back on until the sausages and prawns are heated through (around 5 minutes).
Remove the lid, serve and enjoy!