Preheat the camp oven to 350 degrees (180 degrees C). Line the baking tray with baking paper.
In a bowl combine the peanut butter, sugar, and egg.
Take about 1 tablespoon worth of dough and roll it into a smooth ball. Repeat with the remaining dough.
Place the balls on the baking tray and press them down with a fork. Turn the cookies 90 degrees and press down with the fork again.Tip: The dough doesn’t spread when baked so the size and shape they go into the oven are how they will come out.
Place the cookies in the preheated oven and bake for 15 minutes.
Remove from the oven and let sit on the tray for 2 minutes to set before transferring to a wire rack to cool completely.