1.   In a large bowl, beat butter with an electric mixer until fluffy.

2.   In a large bowl, beat together butter, sugar, eggs and vanilla until light and fluffy.

3.   In a large bowl of an electric mixer fitted with a paddle or beaters, beat butter on medium speed.

4.   In a small bowl, beat butter until fluffy.

5.   In medium bowl, beat butter until creamy with an electric mixer on medium speed.

6.   In another large bowl, with an electric mixer on medium speed, beat butter until light and fluffy.

7.   In large bowl of electric mixer, beat butter until creamy.

8.   In the large bowl of an electric mixer, beat butter until fluffy.

9.   In the large bowl of an electric mixer, beat the butter at medium-low speed until smooth.

10.   Meanwhile, in a large mixer bowl, beat the butter with an electric mixer on medium speed till fluffy.