Rinse fillets, dab dry and cut in half lengthwise. Heat the oil in a pan. Fry the fillets for about 5 minutes on each side. Season with salt and pepper. Take them out and let them cool down.
Wash the parsley and pluck the leaves from the stems. Roll out the dough according to the instructions on the packet and separate the dough triangles.
Cover dough triangles with parsley. Place fillets on top and roll up tightly. Place on a baking tray lined with baking parchment. Bake in a preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer) for approx. 12 minutes.