Directions

1. Preheat oven to 375 degrees F (190 degrees C). In a small bowl, stir together flour, baking soda, and baking powder. ... 
2. In a large bowl, cream together the butter and sugar until smooth. Beat in egg and vanilla. ... 
3. Bake 8 to 10 minutes in the preheated oven, or until golden.

Hope this helped you!