Mix all ingredients for the dough and spread 1/3 of it in a cake tin (25cm, oiled or layed out with baking paper). Preheat the oven to 180°C(350°F) upper and lower heat.
Cut 2 of the apples in pieces (not too small!) Mix the apples with cinnamon, starch, raisins & nuts and spread them over the dough. Top with the rest of the dough & cut the 3rd apple in slices.
Decorate the cake with the apple slices and more nuts if you want ( I added some almond splits on top) Bake it for ~60-80min (depending on your oven and baking form.
Caramel sauce: mix the date syrup with the peanut butter. Add a little bit of water if needed and drizzle the sauce over the cake.