Cris, what you're doing is a home version of what restaurants have in hand; stainless steel collars that fit inside the half sheet that form higher sides. I have not trouble with the 1.5, but if your homemade extender is working, no reason not to keep on with it! Susan
November 9, 2014 at 11:16am
In reply to I always just double the recipe for a 1/2 sheet because doublin… by Cris (not verified)