Dice the bread rolls. Place in a large bowl. Whisk milk, salt and eggs. Pour over the rolls, cover and leave to stand for about 1 hour. Stir several times
Peel apples, quarter them, cut out the core and cut them into slices. Put elderberry juice and apple juice in a pot, bring to the boil. Add the apples, let them steep for 2-3 minutes. Lift them out with a ladle. Bring the juice back to the boil. Stir sauce powder, 2 tablespoons sugar and 6 tablespoons water until smooth. Stir into the boiling juice, bring to the boil and simmer for 1 minute. Remove from the stove. Add apples again. Let cool down
Heat 10 g butter in a large ovenproof pan, add soaked roll and bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for about 20 minutes. Mix cinnamon and 2 tablespoons of sugar. Remove the breadcrumbs from the oven and tear into pieces with two forks
Heat 15 g butter in 3 portions in a large frying pan and bake the bread margarine in 3 portions in it again until golden brown while turning. Keep warm. Arrange the bread marrows on plates with cinnamon sugar and icing sugar. Add the compote. Serve with whipped cream
Waiting time approx. 45 minutes