Light layer Combine the dry ingredients: biscuits and walnuts. Mix water, butter and sugar and melt in the stove. Combine the two and mix well.
2
Dark layer Mix dry ingredients. On the stove, melt water, butter and sugar. Remove from the stove and add chocolate. Mix till it's well combined. Then add to the dry mixture and mix well.
3
Leave both yields to cool slightly.
4
Divide both yields to two and place the yields to the plastic bags. Like that you will have two dark and two light layers.
5
Spread the mixture using your hands first and then a rolling pin.
6
Layer dark/light/dark/light layer,using plastic bags. In the end roll the whole mixture with a rolling pin so that they stick together. Do not press too much.
7
Prepare the chocolate: melt water, sugar and butter. Remove from the stove and add chocolate. When the chocolate melted, pour it over the layers and shake the tray to distribute evenly.
8
Place in the fridge and cool.
9
Before cutting you should leave it on the room temperature to prevent the chocolate from cracking when you cut through.