Vanilla Cupcakes with Vanilla Buttercream Frosting - Auntie Chatter

Ingredients

• 1 1/2 cups cake flour
• 1 1/4 cups all-purpose flour
• 1 tablespoon baking powder
• 1/2 teaspoon sea salt
• 1 1/2 cups sugar
• 1/2 cup butter, softened
• 1/2 canola or vegetable oil
• 4 eggs
• 1 TB pure vanilla extract
• 1 cup buttermilk (or 1 cup milk + 1 tablespoon vinegar)
• 5 cups powdered sugar
• 1 cup butter, softened
• 1/4 teaspoon sea salt
• 1 tablespoon pure vanilla extract
• approx 1/3 cup milk