Preheat an oven to 375 degrees F (190 degrees C). Lightly grease 2 baking sheets.
Beat the butter, sugar, and vanilla with an electric mixer in a large bowl until smooth. Add the egg whites one at a time, allowing each to blend into the butter ...
More Information
Beat the butter, sugar, and vanilla with an electric mixer in a large bowl until smooth. Add the egg whites one at a time, allowing each to blend into the butter ...
More Information