Found this recipe here sometime last week, and being the cookieholic that I am, was forced to try them out. They are delicious on their own, but Jillian didn't think any harm would be done if you frosted them, either. :)
2 3/4 C all-purpose flour
1 t baking soda
1/2 t baking powder
1 cup butter, SOFTENED
1 1/2 C white sugar
1 t vanilla extract
Preheat to 375 degrees. In a small bowl, stir together flour, baking soda, and baking powder. Set aside.
In a large bowl, cream together the butter and sugar until smooth. Beat in egg and vanilla. Gradually blend in the dry ingredients. Roll rounded teaspoonfuls of dough into balls, and place onto ungreased cookie sheets.
Bake 8-10 minutes, or until golden (it was closer to 13 minutes in my oven). Let stand on cookie sheet two minutes before removing to cool on wire racks.