Sweat the onions in a little oil. Then fry the minced meat in the pan and season well with salt and pepper. Then pour off the meat juice and set the minced meat aside briefly so that it cools down a little.
Roll out one of the puff pastry rolls, curl a little larger and spread with half a cup of brunch. Spread 1/4 each of the minced meat, paprika and feta cheese on top. Roll everything up and pinch the ends a little. Do the same with the other puff pastry sheets.
Place the chopping rolls on a baking tray lined with baking paper and brush the surface a little more with the egg yolk. Bake at 200 ° C on the middle rack for about 30 minutes.