2 3/4 cups all-purpose flour
1 teaspoon baking soda
1/2 teaspoon baking powder
1 cup butter, softened
1 1/2 cups white sugar
1/4 cup sour cream
1 egg
1 teaspoon vanilla extract
Preheat oven to 375 degrees F . In a small bowl, stir together flour, baking soda, and baking powder. Set aside. (At this point make sure you put the baking soda back in the cupboard so your two year old doesn't grab it when you're not looking and pour it all over your living room)
In a large bowl, cream together the butter, sugar and sour cream until smooth. Beat in egg and vanilla. Gradually blend in the dry ingredients. Roll rounded teaspoonfuls of dough into balls, and place onto cookie sheets.
Bake 8 to 10 minutes in the preheated oven, or just until the edges start thinking about turning golden. Let cool a few minutes on the sheet then remove to wire rack.
