Prepare sauce while chicken mixture is cooking. (or you can do it before hand and just keep warm) To make sauce add garlic powder, chicken base, cajun seasoning, caynne pepper, cream, half and half in a large pot and heat, stiring occasionally. When hot add parmesan, stirring regularly until cheese melts. Dissolved cornstarch in water and add to the sauce, continue to cook and stir until sauce thickens enough to coat back of spoon. Remove from heat and keep warm.