Ingredients
Equipment
Method
Step-by-Step Instructions
- Preheat your oven to 325°F (163°C) and line a 12-cup muffin tin with cupcake liners.
- In a medium bowl, whisk together cake flour, baking powder, baking soda, and salt.
- In a separate bowl, whisk together milk, sour cream, and vanilla extract until blended.
- Cream together butter and sugar until light and fluffy, about 3-5 minutes.
- Gradually add egg whites, mixing until fully incorporated.
- Alternate adding the wet and dry mixtures until just combined, avoiding overmixing.
- Fill each cupcake liner about ¾ full with batter, approximately ¼ cup each.
- Bake for 20-22 minutes, testing to ensure they spring back when lightly touched.
- Cool muffins in the tin for 10 minutes before transferring to a wire rack to cool completely.
- Beat butter and powdered sugar until crumbly, adding milk and vanilla until smooth.
- Once cupcakes are cool, frost generously and enjoy!
Nutrition
Notes
Ensure all ingredients are at room temperature for the best results. Avoid overmixing to keep cupcakes airy.
