Heat the milk to 40°C so that it is warm but not hot.
Add some flour and mix.
Add melted butter, yeast, sugar and salt. Stir.
Place the dough in a warm place for 20 minutes to rise.
Add the remaining flour and knead the dough. Knead it until it comes away from the sides of the bowl. You may need a little more flour. Cover the dough with cling film or a clean towel. Put it in a warm place for 1 hour to rise.
Meanwhile, finely chop the onion. Fry it in vegetable oil for 5 minutes. Add the minced meat to the onion. Fry everything together for another 5-7 minutes. Salt and pepper the filling to taste.
Sprinkle the table with flour and put the dough on it. Give the dough an elongated shape.
Divide the dough into portions and form into balls.
Roll out each ball of dough with a rolling pin.
Place the filling on the dough.
Form the rasstegais by folding the dough in half and pinching the edges, leaving the center open.
Line a baking tray with parchment paper, grease with vegetable oil and place the rasstegai on it. Place the rasstegai in the oven for 20-30 minutes at 180 °C.
Sprinkle the rasstegais with freshly chopped dill. Done. Enjoy!