Divide the dough into 12 equal pieces. With lightly oiled hands, form each piece of dough into a 4-inch (10 cm) circle. Place about 3 tbsp of the filling at the centre of each dough circle. Gather the dough into little packets to seal in the filling. Flatten the packets between your hands, passing the dough from one hand to the other, until each one forms a 4-inch (10 cm) circle.