Step 1

Preheat oven to 350 degrees F. Line cookie sheets with parchment paper.

Step 2

In a small bowl, stir together flour, baking soda, baking powder and salt. Set aside.

Step 3

Using a mixer, beat together the butter and sugar until smooth and very fluffy.

Step 4

Beat in egg, vanilla extract, lemon juice and lemon zest.

Step 5

Gradually blend in the dry ingredients.

Step 6

Roll rounded teaspoonfuls of dough into balls, and roll in sugar. Place on lined cookie sheets about 1 1/2 inches apart.

Step 7

Bake 8 to 10 minutes in the preheated oven, or until lightly browned.

Step 8

Let stand on cookie sheet two minutes before removing to cool on wire racks.