Beat the egg yolks with the sugar until the mixture is thick and frothy, then incorporate it with the mascarpone.
Whip the egg whites until stiff and incorporate them into the egg and mascarpone mixture. Create a layer of cream on the bottom of the serving dish.
Soak the ladyfingers in the coffee, on one side only, and create a neat first layer in the dish. Cover with a generous layer of cream, add the chocolate chips and the Marrons Glacés Fabbri in large chunks.
Repeat for another layer. Finish with the mascarpone cream and leave to firm up in the fridge.
Cut a slice and garnish with unsweetened cocoa powder and Marrons Glacés.