In a bowl, cream together butter and sugar until fluffy.
Add egg, vanilla extract, lemon juice and zest and mix.
Stir in remaining ingredients (except powdered sugar) until just combined.
Pour powdered sugar into a shallow dish. Take a part of the dough, roll it into a walnut size ball and roll in powdered sugar. Place on a baking sheet lined with baking paper. Repeat with remaining dough.Bake in 350 degrees F oven for about 10 minutes or until bottoms of cookies begin to barely brown. Cool cookies before removing from baking sheet.