Preheat oven to 320F/160C. Oil a 8x8 square cake tin and line it with parchment paper. Put aside.

In a large bowl, combine the desiccated coconut, icing sugar and condensed milk. Mix it really well.

Transfer half of it in a medium size bowl. Add in cocoa powder and nutella to this bowl and mix well.

Pour the mixture with chocolate flavor in the parchment paper lined square tin. Press on it with slightly wet fingers so that you get a flat surface. 

Spoon the remaining white mixture on the chocolate layer and flatten with your fingers again.

Finally (and optionally), place strawberry slices on the top. Imagine one strawberry slice for one square. And bake for 20-25 minutes or until the edges are golden.