Roll out the dough in a working surface and cut into 12.5 cm squares.
In a large skillet, cook the beef and pork sausage until browned and well combined (cook the meat completely through).
Stir in the cabbage and onions. Fry for 5 minutes, season with salt and pepper and continue cooking for 15 minutes.
Turn down the heat to low and keep it warm.
Take each square of pastry and fill with 1 tbs of the meat and cabbage mixture. Seal the dough by bringing the four corners up and then overlaping them.
Turn the pastry upside down and place on a lined baking tray. Brush each pastry envelope with butter.
When all the pastry has been used up set aside in a warm place to rest for 40 minutes.
Bake in a previously pre-heated oven at 180°C for 20 minutes or until the pastry is cooked through and golden.