Mix the margarine, sugar and egg yolks until foamy and stir in the quark. Beat the rusk into small pieces and stir into the quark mixture with the almonds. Fold in the whipped egg whites.
Cut the apples into small cubes and mix with the sugar and cinnamon. Put the apples in a baking dish. Spread the rusk mixture on top. Bake at 200 ° C for about 35 minutes.