Cut the apples into small pieces, then sprinkle with cinnamon sugar in a bowl and stir. Fry this with a little butter in a pan until a light mass of butter and cinnamon is formed. Let cool down a bit.
Mix the low-fat quark with the mascarpone, then add the sugar and the juice of the tangerine to taste. If necessary, dilute with milk until the mass is creamy.
First put a little cinnamon apple mixture without apples in dessert glasses, topped with some of the quark cream. Then put the fried apples in the glasses, layer the cream again and sprinkle with crumbled speculoos on top.