Grease a cookie sheet, or line with parchment paper.
Cream sugar and butter. Slowly add in the flour. Add the lime zest, and the salt.
On a well floured surface roll in to a rectangle and cut into three strips of equal length..
Roll each strip into a tube. The dough will be quite crumbly, just shape it gently.
Cut ¾" pieces from each tube, and roll each piece into a ball.
Pinch the top of the ball to create a raised surface.
Bake for 15 minutes or until they begin to turn golden,
Remove from the oven. Cool slightly and then sprinkle with sugar.
Notes
FREQUENTLY ASKED QUESTIONS:
How long can I freeze these polvorones de limón shortbread cookies? You can freeze them in an airtight container with freezer paper between layers of cookies. Be sure they are completely cooled before storing. They will store nicely for up to 6 months. This is a great cookie to make in advance for Christmas.
Do I have to refrigerate the cookies? No, you do not. You can store these in an airtight container at room temperature for about a week.