Ingredients:
1/2 cup butter, softened
1/2 cup white sugar
1 egg
3/4 cup all-purpose flour
Directions:
1. Preheat oven to 350 degrees F (190 degrees C). Grease cookie sheets.
2. Cream the butter and sugar until light and fluffy. Separate the egg and reserve the egg white. Beat the egg yolk into the mixture. Mix in the flour. Beat the egg white until is stands in peaks. Cut it into the dough. Drop by teaspoonfuls 3 inches apart on cookie sheets.
3. Bake 8 to 9 minutes, or until edges are golden.