Add the Cajun seasoning and thyme. Cook gently, stirring occasionally, for a further 5 mins.
Drain the rice thoroughly, then add it to the frying pan with the stir-in sauce, stirring well to combine. Add the prawns and cook for another 2-3 mins, until thoroughly heated, then serve.
Cool any leftovers quickly and keep covered and refrigerated. Use the next day – either thoroughly re-heated, or eaten cold for a packed lunch.