Highlander Slice:

Lightly grease the base of a 27cm x 18cm x 3cm tin.

Melt the butter in a medium saucepan.

Remove from the heat and add the condensed milk. Beat well.

Stir in the sultanas and biscuit crumbs.

Press the mixture into the tin.

Bake in a preheated oven at 180 C for 40-45 minutes.

Leave in the tin to cool, then spread the top with Chocolate Icing.

Cut into bars when the icing has set.

Chocolate Icing:

Place the icing sugar, cocoa and butter in a small bowl.

Add the vanilla essence and the boiling water.

Mix to a spreading consistency, adding a little extra water if required.