Mix the wheat flour, wholegrain spelled flour, whole cane sugar, vanilla sugar and baking powder. Melt the margarine in a saucepan and add to the flour mixture along with the pureed apple and water. Now gradually stir everything into a dough with a spoon and place on a greased and floured baking sheet. Sprinkle the ball of dough with a little flour and spread it on the baking sheet with your hands. If the dough sticks to your hands, sprinkle some flour on top.
Stir the jam until smooth with a teaspoon and then spread it on the dough. This works well with a teaspoon, but it can also be done with a brush.
For the topping, melt the margarine in a saucepan, then add the sugar - it is better to use normal sugar here - and the vanilla sugar. Simmer briefly, then add the hazelnuts and water, stir and distribute evenly on the dough.
Bake the nut wedges in a preheated oven at 175 degrees for 25 minutes. Let cool down briefly, then cut straight away. You can wipe the knife with a piece of kitchen paper in between. Do not hold it under water - the sugary mass will harden immediately on the knife.
Melt the chocolate in a double boiler and then use a spoon to spread it over the nuts. When the chocolate has set, these super juicy nut wedges can be eaten.