Cut the vegan sausages into round slices.
Add 1 tablespoon olive oil to a large pot or skillet and heat over medium to high heat.
When hot, add the sliced vegan sausage and sauté for around 5 minutes until the sausage is lightly browned.
Transfer the sausage to a plate and set aside.
Add the remaining 2 tablespoons olive oil to the same pot or skillet you just cooked the sausage in, and then add the chopped onion, crushed garlic, bell peppers and celery. Sauté for around 5 minutes until the veggies are softened.
Add crushed tomatoes, soy sauce, vegetable stock, long grain white rice, cajun seasoning, dried thyme, cayenne pepper and a bay leaf and stir in.
Bring to a simmer and then reduce heat, cover and let it simmer for 25-30 minutes, stirring every 5 minutes or so to make sure it doesn't burn, until the rice is cooked through.
Add the vegan sausage back to the pot and stir it in. Remove the bay leaf.
Taste test and add salt and pepper as needed or extra cajun seasoning.
Serve topped with fresh chopped parsley and sliced green onions.