Heat oven to 375º F.
Beat the butter and pecans with an electric mixer until well blended. Add the cookie mix, flour, and water and beat until the mixture forms a dough. Roll the dough into 1-inch balls and arrange on an ungreased baking sheet, 1 inch apart.
Bake 14 to 16 minutes or until firm. Let cool 5 minutes. Roll in confectioners' sugar and set aside on a wire rack until completely cooled. This recipe makes 5 dozen cookies.