Garrett McCord

INGREDIENTS

1 1/2 cups

+ 2 tablespoons all-purpose flour

1/4 tsp

kosher salt

1 1/4 tsp

baking powder

1/2 cup

unsalted butter, room temperature

1 cup

sugar

egg plus 2 egg whites

1/2 cup

whole milk

1/4 cup

sour cream

1 1/2 tsp

vanilla extract

1/2

vanilla bean (or one whole bean if you can spare it)

1/2 cup

unsalted butter, room temperature

1 1/4 cups

powdered sugar

1/2

vanilla bean (or 1 teaspoon of vanilla extract)