Preheat oven to 325 degrees. Line baking sheets with parchment paper.

In the bowl of electric mixer beat butter on medium speed for 30 seconds.

Add sugar and beat until fluffy.

Add water and vanilla extract, beat well.

Add flour and chopped pecans and mix on low speed until combined.

Shape the dough into crescents about 2 inches long by 3/4 inches wide.

Place on parchment lined baking sheets and bake for 20-25 minutes, until edges are lightly browned and cookies are firm.

Remove from oven and cool completely.

Add sifted confectioners sugar to a plastic bag. Gently shake a few cookies at a time in the bag until well coated with sugar.