I ordered this to work in my toaster oven.   It fits perfectly.  The dish is very heavy and the inside is so slippery I do not need to add anything to it. But I do enjoy putting butter and sugar with either chocolate or cinnamon before the batter. I think you  could add nuts too.  The cakes I  make cook so well thru and I love inverting the pan onto a plate.  When done you can put the pan back over the cake for easy covering.  It washes up very easily.  I can see where I will be doing a lot of baking with this pan. Cakes seem to cook faster in them.  I am all for using less energy!  Great deal for the money!  Quality!