The Edgeless Brownie Tray 3

To follow up on the "Edgeless Brownie Tray" saga, I learned from a friend (who does more baking than I do) that the crunchy/crusty edge-pieces of a pan of brownies can be eliminated simply by putting the pan of brownie mix inside a bigger pan and filling the outer pan with water. This perfectly workable solution, while not requiring anti-gravity or complicated apparatuses, lacks a certain je-ne-sais-quois.