Ingredients
Equipment
Method
Step-by-Step Instructions
- Preheat your oven to 325°F (160°C) and prepare a muffin tin with cupcake liners.
- In a medium bowl, whisk together cake flour, baking powder, baking soda, and salt.
- In a separate bowl, mix together whole milk, sour cream, and vanilla extract.
- In a large mixing bowl, cream unsalted butter and granulated sugar until light and fluffy.
- Add egg whites to the creamed mixture until fully incorporated.
- Gradually add the dry ingredients to the wet mixture, alternately with the milk mixture, mixing gently.
- Fill each cupcake liner about ¾ full with the batter.
- Bake for 20-22 minutes until tops spring back when pressed.
- Let cool for about 5 minutes, then transfer to a wire rack to cool completely.
- In a mixing bowl, beat together unsalted butter and powdered sugar until crumbly, then add milk and vanilla extract until creamy.
- Adjust frosting consistency as needed, adding more milk to achieve a pipeable texture.
- Once cupcakes are cool, pipe the buttercream frosting onto the tops.
Nutrition
Notes
Sift flour for a lighter texture, and ensure cupcakes cool completely before frosting to maintain buttercream shape.
