The easiest way to fold the dough is to roll it out thin. Then, cut it into circles and place a small dollop of filling in the center. Fold one side of the circle over the filling, then fold the opposite side on top of that. This will create a peak at the top of the cookie. Then to finish it off, fold up the bottom side over the other two sides, creating a triangle. To ensure that the folds won’t unravel, lightly tap them down to stick the dough together.