Wash, halve and stone the peaches. Remove the flesh with a ball cutter or a spoon to about 1 cm. Cut the flesh into small pieces. Coarsely crumble 80 g Amarettini with your hands.
Mix both with 1 egg, cocoa and 2 tablespoons of sugar. Heat 2 tablespoons of butter. Fill the peaches with the Amarettine mixture. Place in a greased casserole dish. Sprinkle with butter, sprinkle 1 tablespoon of sugar on top.
Bake in the preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer) for 20-25 minutes.
For the zabaglione Marsala, mix 4 egg yolks and 80 g sugar. Whip in a hot water bath for 7-10 minutes until foamy. Remove from the water bath and continue beating until it has cooled down lukewarm. Serve everything.
Decorate with remaining Amarettini. Drink tip: Espresso.