I might have to make the 120 mile (round trip) trek to a TJ's to browse the aisles. I've never even seen one.Now that I've had some more time to think about this question, I need to modify my answer. First I'd crumble a thick, fudgey chocolate brownie on top, and THEN I'd add TJ's caramel sauce. And the vanilla ice cream would need to be a super high quality brand with a rich vanilla bean flavor.
Or I might bag the ice cream and the brownie and eat the caramel sauce from the jar, because that's how good that stuff is!