Makes 18
170g butter, softened
1/4 cup icing sugar
1 tsp vanilla extract
1 1/2 cups plain flour
1/4 cup custard powder
Lemon filling
50g butter, softened
1/2 cup icing sugar
2 Tbs custard powder
2 tsp finely grated lemon zest
Icing sugar
1. Preheat the oven to 180C. Grease or line an oven tray with baking paper.