Spread (scant) teaspoon of peanut butter on each square, avoiding the edges.
Break chocolate into small chunks, add 1-2 chunks per square.
Place 4-5 mini marshmallows in the peanut butter.
Fold pastry in half, using a fork to press the edges together and make a rectangle.
Heat the oil in a frying pan on medium-low heat.
Fry 3-6 pastries at a time, flipping after 2 minutes or when golden brown on bottom.
Scoop out of pan with slotted spoon or spatula onto a paper towel covered surface.
If desired, sprinkle with powdered sugar or cocoa powder.
It helps if the dough is cold or chilled before working with it.Don't use a full teaspoon of peanut butter, there won't be enough room.If left in the frying pan for too long, the edges may start to come apart. If this happens, ABORT MISSION! Take them out!