Sour Cream Sugar Cookies III

3 cups sifted all-purpose flour

2 teaspoons baking powder

½ teaspoon salt

¾ cup butter

¾ cup white sugar

1 egg

¼ cup sour cream

1 teaspoon vanilla extract

Sift flour, baking powder, and salt. Cream butter with sugar, beat in egg, then stir in sour cream and vanilla. Stir in flour mixture 1/3 at a time.

Wrap dough in wax paper and chill.

Roll out 1/4 inch thick. Cut out cookies with your favorite cookie cutters. Put on ungreased cookie sheet. Bake at 350 degrees F (175 degrees C) for 10 minutes.