02With an electric mixer, cream butter, sugar and eggs. In a medium bowl, mix flour, baking soda, salt, and baking powder together. Alternate adding dry ingredients and sour cream to the wet mixture. Add vanilla.
03Using a spoon, drop cookie batter on an ungreased cookie sheet. No rolling or cutting is required. Bake for 8 to 10 minutes. Cool, and then frost with your favorite icing.