Knead the baking mix with yeast (enclosed in the package) and 300 ml of lukewarm water to form a smooth dough. Cover and leave to rise in a warm place for about 30 minutes
Onion peel, in thin rings planes and/or cut. Roll out the dough on a little flour oval (approx. 25 x 34 cm). Place on a baking tray lined with baking paper. Spread onion rings on the dough. Let it rise for another 15 minutes
Thickly cover bread with cheese slices. Bake in a preheated oven (electric cooker: 200 °C / convection oven: 175 °C / gas: level 3) 30-35 Sprinkle with coarse pepper