For the filling, peel and finely dice the onion and garlic. Wash the meat, dab dry and cut into very fine cubes. Heat olive oil in a large, coated pan.
Fry the meat for about 2 minutes and remove from the heat. In the meantime chop the olives coarsely. Add onion, garlic and olives and fry for 2-3 minutes. Cut tomatoes into strips. Wash parsley, dab dry, pluck leaves from stalks and chop finely.
Fold the parsley and tomatoes into the meat. Season with salt and pepper and let it cool down. Mix quark, milk, sunflower oil, 1 teaspoon salt and 1 egg. Mix flour and baking powder, knead to a smooth dough with the dough hooks of the hand mixer.
Roll out the dough on a floured work surface 3-4 mm thin. Cut out circles (approx. 10 cm Ø) from it. Put some filling in the middle of each circle. Whisk 1 egg, brush the edges of the dough with it and fold it over the mince mixture to form a semicircle.
Slightly fold in the edges and press down. Spread on 2 baking trays lined with baking paper. Brush with remaining egg and bake in a preheated oven (electric cooker: 200 °C/ convection oven. 175 °C/ gas: level 3) for 15-20 minutes until golden brown.