1/2 cup(s) (1 stick) butter, softened 1 cup(s) sugar 2 large eggs 2 large egg yolks 1 teaspoon(s) vanilla extract 1 1/4 cup(s) cake flour 1 1/2 teaspoon(s) baking powder 1/4 teaspoon(s) salt 1/2 cup(s) milk.
Directions to make Boston Cream Pie:
Heat oven to 350 degrees F. Line the bottom of an 8-inch round cake pan with parchment paper. Butter and flour the pan. Beat the butter and sugar together at medium-high speed until fluffy. Beat in the eggs and yolks, one at a time, and add the vanilla extract. Stir the cake flour, baking powder, and salt together using a whisk. Reduce mixer speed to low and beat the flour mixture into the butter-egg mixture, adding it in thirds and alternating with the milk. Beat until the batter is smooth. Transfer to the prepared pan and bake on the center shelf of the oven until the cake tests clean when a skewer is inserted into the center, 35 to 40 minutes. Cool completely on a…