Scald peaches with boiling water. Leave to stand for 1-2 minutes. Remove with a ladle and rinse with cold water. Peel skin, cut peaches in half and remove the stone.
For the crumbles, mix flour, sugar, vanillin sugar, salt and baking powder in a large mixing bowl. Add egg and fat in flakes. Work into crumbles with your hands. Grease a spring tray (top 30 cm, bottom 26 cm Ø) and sprinkle with flour.
Put just under 2/3 of the dough into the spring tray, press it onto the tray bottom with floured hands, so that a crumble base is formed. Sprinkle with breadcrumbs. Place the peach halves on top. Work the chocolate under the remaining crumbles.
Spread chocolate sprinkles evenly on the peaches. Bake in the preheated oven (electric range: 200 °C/ convection oven: 175 °C/ gas: level 3) on the lower rack for 45-50 minutes. Remove from the oven and allow to cool on a cake rack.
Remove from the spring plate after approx. 45 minutes. Serve on a cake plate. Vanilla ice cream tastes good with it.