Peanut Butter Banana Panini

This one doesn't really require a recipe, but it is one of my favorite peanut-butter-based indulgences, so I figured I'd post it anyway.

Cut some thick slices of crusty bread. (Using good, hearty bread makes these so much more satisfying.)  Spread one side of each slice with a thin coating of margarine.  Spread the other side with peanut butter.  Sandwich sliced banana between the peanut butter layers, and fry on a griddle or cook in a panini press until bread is golden and crunchy.  Sometimes I also like to add some sliced green onion along with the banana slices, which makes the sandwiches a little less dessert-like.  Not that I have a problem with eating dessert-like lunches.