In a large bowl mix the butter or margarine, confectioners' sugar, brown sugar, egg and vanilla together until light and well combined.

In a medium bowl combine the flour, ground pecans and salt. Add the dry ingredients to the wet ingredients and mix until a soft dough is formed. Wrap dough in plastic and refrigerate for 1 hour.

Preheat oven to 350 degrees F (175 degrees C).

Roll chilled dough to 1/4 inch thickness and cut into desired shapes.

Place cookies on an ungreased baking sheet and bake at 350 degrees F (175 degrees C) for 7 to 9 minutes or until light golden brown.