OK, here's a quick useless tip. My kids hate the crust of the bread (surprise, surprise). Seeing that the only sandwiches they will eat are peanut butter sandwiches, this works out well. As I was making a peanut butter sandwich, the light bulb went off in my head. I use the big honkin' jar of peanut butter. The lid fits inside the crust perfectly. Make the sandwich, put the lid in the middle, press down and scoot it around a little bit, and you have a perfect of a peanut butter sandwich. It's like magic. Really.