Makes 20-24
100g butter
1 cup brown sugar (firmly packed)
1 egg
1 teaspoon vanilla
About ¾ cup flour
¼ cup cocoa
1 tsp baking powder
½ cup chocolate pieces, or chopped nuts, or sultanas
Icing
1 ¼ cups icing sugar
1 ½ tbsp cocoa
Water to mix to until it's easy to spread.
1 Preheat oven to 165C. Position oven rack in middle of oven.