In a small bowl, mix together the wheat flour, sugar, margarine, and cinnamon, and then add the walnuts.
Spread the crumbles on the thalers and bake in the preheated oven for about 25 minutes until golden.
Line a 20x20cm square loaf tin with baking paper and pour in the dough.
Peel and core the apples, then cut them into thirds and score.
Place the apple thirds in the batter.
In a small bowl of flour, sugar, margarine, and cinnamon, mix the crumble and sprinkle over the cake.
Bake for 45 minutes until golden, then allow it to cool in the tin.