Step 1

Preheat oven to 150C/130C fan-forced. Grease and line 2 baking trays with baking paper.

Step 2

Using an electric mixer, beat butter and 1/4 cup sugar until light and fluffy. Using a wooden spoon, stir in flours. Strain passionfruit, discarding seeds. Add passionfruit pulp to butter mixture. Stir well to combine.

Step 3

Roll 1 level tablespoon mixture into a ball. Flatten between palms. Place on prepared tray. Repeat with remaining mixture, placing 2cm apart on tray. Brush tops lightly with a little water and sprinkle with remaining sugar.

Step 4

Bake, 1 tray at a time, for 15 minutes or until just firm to touch. Cool on trays. Serve dusted with icing sugar.