Components
125g unsalted butter, softened
1/2 cup caster sugar
1 tsp vanilla extract
1 free-range egg
1 1/4 cups gluten-free plain flour, plus slightly further for dusting
2 Tbsp white rice flour
1 tsp xanthan gum
PASSIONFRUIT BUTTERCREAM
80g unsalted butter
2/3 cup icing sugar combination, plus further, to mud
2 Tbsp passionfruit pulp
