This is a very good recipe. They are tasty. However, I advise against using an ice cube tray. This is what I used and after they set, it was a struggle to get them out in one piece. They kind of broke up when I tried to scoop them out with the fork and a lot of it was left in the ice cube tray itself.

I think a better suggestion is to take an 8 x 8 pan, line it with foil, and pour the batter into that and let it set. After it is set, lift the foil out, take the giant square of pumpkin pie bomb off of the foil, and then slice it.