He mentions it's a variation of a slice he would buy at school. Here is a rec for Rough Slice
from the Melbourne Larder blogspot. She mentions that this is a traditional treat that mums would bake in Australia. Her recipe is a bit different, but sounds just as yummy and "rough" with the addition of coconut.
CHOCOLATE ROUGH SLICE
I always make a double batch of this slice, to use up the tin of condensed milk. It keeps well and also freezes well.
125 g butter
1/2 cup sugar
1 tablespoon golden syrup
3/4cup coconut
1 cup SR flour
Grease and line a slice tin(I imagine a 9"square, or 13X9 pan for double batch) with non-stick baking paper. Cream butter and sugar, add golden syrup and coconut, then flour. Bake in a moderate oven (180 degrees) for 10 to 15 minutes (don't let it brown). Cool slightly and add topping.
Topping
1 tablespoon butter
1 tablespoon cocoa
½ can condensed milk
1 cup icing sugar
1 cup coconut
½ teaspoon vanilla
Melt butter and warm condensed milk over gentle heat. Add vanilla and sifted cocoa and stir well. Add icing sugar and coconut. Spread over cooled slice.
POSTED BY MELINDA AT 8:21 AM
Melbourne larder