In a medium bowl, combine flour, baking powder, baking soda, and salt. Set aside.
In a large bowl, cream together the butter and sugar until smooth. Beat in the egg and vanilla. Gradually blend in the dry ingredients.
Roll the dough into 1 inch balls and place them 2 inches apart on an ungreased cookie sheet.
Bake for 8 to 10 minutes in the preheated oven, or until golden. Allow cookies to cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.
Interesting Facts
These cookies can be frozen for up to 3 months.
The cookies will spread out while baking, so make sure to leave enough room between them.
You can add any type of nut or dried fruit to the dough for extra flavor.
These cookies are best enjoyed with a cup of tea or coffee.