Vanilla Butter Cake

Beat the butter on medium speed with an electric mixer until creamy. Gradually add the sugar, whisking on medium speed until light and fluffy. Add the eggs 1 at a time, whisking after each addition until smooth.Sift together the flour, baking powder, and salt. Add to the butter mixture alternately with the dough halves, starting and ending with the flour mixture. Beat on low speed until smooth after each addition. Add vanilla. Pour into a greased and floured 12-cup baking dish.Bake at 325 degrees for 1-10 minutes or until a long wooden stick inserted in the middle of the pie comes out clean. Cool in the pan on a wire rack for 15 minutes. Transfer from the pan to a wire rack; refrigerate for 30 minutes or until completely cooled. Decorate if desired.