Place the first seven ingredients in a bowl and mix until a dough forms.
Peel the apples. Dice 2 apples and slice the other 2 apples. Fold the diced apples into the dough. Then place it in a prepared 26mm springform pan. Spread the apple slices over the dough and, if desired, sprinkle with a cinnamon-sugar mixture.
Bake at 180°C in a preheated oven for approximately 30-35 minutes.
5 smartpoints per piece for 12 slices of cake.