Vanilla Bean Cupcakes with Vanilla Bean Buttercream Frosting

INGREDIENTS

3/4 cup

all-purpose flour*

3/4 cup

cake flour*

1 1/2 tsp

baking powder

1/4

+ 1/8 tsp salt

1/2 cup

unsalted butter, softened

3/4 cup

+ 2 Tbsp ((180g) granulated sugar)

Seeds of 1 vanilla bean

large egg

large egg whites

1 tsp

vanilla extract

Scant 2/3 cup ((145 ml) milk (anything but skim)**)

3/4 cup

butter, nearly at room temperature (preferably 1/2 cup unsalted and 1/4 cup salted)

Seeds of 1 vanilla bean

3 cups

powdered sugar

2 tbsp

heavy cream

1/2 tsp

vanilla extract