First you will need two slices of SOFT bread. It can been wheat or white, or whatever kind you fancy, but it needs to be fairly soft in order to stick together.

Trim off the crusts (thus the term "crustless").

Add a glob of peanut butter to one crustless slice, and a glob of jam or jelly to the other slice.

Spread the PB&J on the bread, but not all the way to edge.

Place the two crustless slices together and then grab a small plastic cutting board and press each edge of the sandwich together. Trim any excess bread.