Fold each circle in half and pinch the edges together.
Roll the edge over and crimp or flute the edge with a skewer and pierce the top to let steam escape.
Place puff on a tray lined with baking paper, glaze with a little milk and sprinkle with poppy seeds.
Bake in a hot (200 deg C) oven until golden brown. If overfilled the cheese may leak out as shown here. Simply break the leaked cheese off and serve.