Ingredients
Method
- Whisk the flour, baking powder, and salt in a medium bowl.
- Beat the softened butter and sugar in a large bowl until pale and fluffy, about 3 minutes.
- Beat in the egg and vanilla extract until smooth.
- On low speed, mix in half the flour mixture, then all the milk, then the remaining flour mixture, just until combined.
- Spread the batter into a greased, parchment-lined 6-inch round cake pan and bake at 350°F for 25 to 28 minutes. Cool completely on a rack.
- Beat the frosting butter until smooth, then beat in the powdered sugar and vanilla. Thin with milk until spreadable. Frost the cooled cake and serve.
Notes
Cool the cake completely before frosting, or the buttercream will melt. If the frosting gets too soft while you work, pop the bowl in the fridge for 5 minutes.
