I think "jambalaya" and "without a zillion ingredients" is probably a contradiction in terms. A basic one should start with a light roux; should have celery and onions, rice (of course), Cajun spices (you can probably use one of Emeril's premix "essences") and one or more of the following: chicken, shrimp, Andouille sausage, crawfish, or whatever else suits your fancy.