They put out a oreo cheesecake box mix at Christmas. It is a pudding type mix and the crust is an oreo crust. You mix the crust with butter and put in a pan. It could have come with it's own "pan". Then you mix the cheesecake part like you would instant pudding. Pour the cheesecake in the crust and refrigerate for a couple of hours.
we've had it and it is really good! I don't know if this is what you are looking for but your description made me think of this one. I don't know if it is Jello brand or not. That is the brand of cheesecake mix I have in the cupboard now. You would find it in the pudding area I would think. I have bought it at Walmart in times past.