In a larger bowl, beat the butter, granulated sugar, brown sugar, and vanilla extract until creamy.Add eggs one at a time, beating well after each addition.

• 在大碗内把黄油、砂糖、红糖和香精混合搅拌成乳状，分开把鸡蛋加进去，每加入一个鸡蛋都要搅拌均匀。