Vanilla Bean Cupcake Recipe

Ingredients

• 1/2 cup whole milk
• 1/2 whole vanilla bean (or 1 whole bean if you can spare it)
• 1 1/2 cups plus 2 tablespoons all-purpose flour
• 1/4 teaspoon kosher salt
• 1 1/4 teaspoons baking powder
• 1/4 cup sour cream
• 1 1/2 teaspoons vanilla extract
• 1/2 cup (1 stick) unsalted butter, room temperature
• 1 cup sugar
• 1 large egg
• 2 egg whites
• 1 1/4 cups powdered sugar
• 1/2 vanilla bean (or 1 teaspoon of vanilla extract)