Heat oven to 350Â°.
Mix pie crust mix (dry), 1 cup confectioners' sugar and the pecans.
Stir in egg and vanilla; gather dough into ball.
Turn dough onto lightly floured cloth-covered board; knead until smooth.
Shape into 3/4 inch balls.
Shape balls into crescents on ungreased baking sheet.
Bake until light brown, 10 to 15 minutes.
While warm, roll in confectioners' sugar.
Roll in sugar again.
Wrap, label and freeze.
20 minutes before serving, remove Pecan Crescents from freezer and unwrap.
Place on serving plate; thaw uncovered at room temperature