I added 2 cans of Libbys right to the mash of my pumpkin beer last October. I baked them slightly on a cookie sheet to carmalize a bit after I mixed them with Vanilla extract and pumpkin pie spice the night before I brewed. It was a good beer, I think I may use a little more spice in secondary next time though as it seemed to fade quickly after the first month of drinking. Dont worry about a stuck sparge either. If it happens, just cut the grain bed with your paddle in a tic-tac-toe design. Worked like a charm.