Preheat oven to 350 degrees F. Grease two round cake pans, a 13×9″ dish, or a bundt pan.
Mix butter on medium-low speed until smooth, then add remaining ingredients. Mix on lowest speed until combined, and then on medium-high speed for three minutes.
Pour batter into pans. Bake round cakes for 25-30 minutes, rectangular cake for 35-40 minutes, or bundt cake for approximately 45 minutes. Cake is done when toothpick inserted into center comes out clean.
Cool cake in pan for 10- 15 minutes, then cool completely on wire rack before decorating.