This 6-inch layer cake is perfectly sized for a small group and serves 6 hearty slices or 8 smaller slices. It is an all butter cake that is tender and delicate.
Preheat oven to 350°F. Grease and flour two 6-inch cake pans and line the bottoms with parchment paper.
Sift the cake flour, baking powder, and salt in a medium bowl and set aside.
In a large mixing bowl beat the butter and sugar on medium high speed for about 4 to 5 minutes until it is light and fluffy.
Add the egg and vanilla extract and beat well.
Pour ½ of the flour mixture into the butter mixture and mix it on low speed only until incorporated. Next add the milk and mix until it is just blended.
Add the other ½ of the flour mixture and mix on low speed until it it is blended. Do not over-mix.
Divide the batter between the two cake pans. Bake for 18 to 22 minutes or until a toothpick inserted in the center comes out with just a few crumbs.
Let the cakes cool in the pans for 10 to 15 minutes before inverting them onto a cooling rack. If you remove the cakes while they are piping hot, they are more likely to crack.
Allow the cakes to cool completely before frosting them. If you stick them in the freezer for 15 to 20 minutes they will be even easier to frost.