Mix the paprika with all the other ingredients up to and including the cardamom.
Heat the oil in a frying pan. Sauté the onions for approx. 5 mins., add the sweet potatoes and cook for approx. 5 mins., leave to cool. Mix in the mince, coriander and spice mix.
Puff pastry rolls
Cut the puff pastry crosswise into 3 pieces, spread one third of the filling lengthwise down the middle of each piece of pastry, leaving a border of approx. 3 cm all around. Brush the edges with a little egg, fold loosely over the meat and press down firmly with a fork. Place the pastry rolls seam-side down on a baking tray lined with baking paper, brush with the remainder of the egg.
Approx. 30 mins. in the lower half of an oven preheated to 220°C.
Combine the quark, feta and coriander, serve with the mince rolls.