210 gm butter
210 gm sugar
150gm sourdough starter
210 gm flour
3 tsp baking powder
Preheat oven to 180degrees. Line a tray, cake or muffin tins.
Cream butter and sugar until creamy and thick.
Add bananas and mash. Add eggs and beat until combined
Stir through starter.
Add flour and Baking powder. Fold through.
Pour batter into lined tin.
Bake for 40-50 minutes or until a skewer comes out clean.
For the frosting combine icing sugar, lemon juice and fresh passionfruit pulp. Drizzle over the top.