Sour Cream Drop Sugar Cookies

Sour Cream Drop Sugar Cookies - .sour cream 1 1/2 tsp vanilla extract 1 egg 2 1/2 cup all purpose flour 1 tsp baking powder 1/2 tsp baking soda 1/2 tsp salt 1/2 cup sugar (decorating drop the dough by rounded teaspoons into the decorating sugar, rolling very gently until it is completely coated with the sugar.