Preheat oven to 180C
Melt butter in medium size saucepan on stove.
Take the pan off the stove and add remaining ingredients. Mix well.
Press into square or rectangle cake tin
Prick with a fork and sprinkle some caster sugar over the top.
Bake for 30 min or till it starts going light brown at the edges.
Cut into squares while still warm and allow to cool in tin before removing and storing in an airtight container.