So, all you need is:
200 grams of chocolate (dark or milk or both)
50 grams of butter
100 grams of roasted crushed nuts (almonds or walnuts or any other nuts you like, you cam mix different types of nuts).
Full hand of crushed cornflakes (I used one that kids didn't liked), you can put more.
10 prunes cutted into little pieces
Melt your chocolate, add butter, stir till melting.
Add rest of the ingredients and mix all together