1 stick unsalted butter, softened (113g)
1/2 cup superfine sugar (caster sugar)
1 large egg, room temperature
1 tsp vanilla bean paste (or pure vanilla extract)
1 3/4 cups all-purpose flour, sifted
1 tbsp cornstarch (cornflour)
1 tsp baking soda
1 pinch fine sea salt
== Pink Almond Frosting ==
1/2 stick unsalted butter, softened (57g)
1 3/4 cups powdered sugar, sifted
1 tbsp whole milk
1/2 tsp almond extract
optional vanilla bean paste
few drops pink gel food coloring