Directions:

For the Cookies:

Preheat your oven to 350 and put racks in the upper and lower third.

Mix butter and sugar for 2 minutes.

Mix in zest and juice, then flour and salt.

To make the Cookies:

Roll half the dough into 1" balls.

Arrange the dough 1" apart on 2 baking sheets.

Flatten balls into cookies.

Bake for 6 minutes, and switch baking sheets from top to bottom.

Then Bake 6 minutes more.

Cool cookies on baking sheets, for 2 minutes.

Transfer to a rack and cool completely.

Cool baking sheets, then repeat with the remaining dough.

For the Frosting:

Mix sugar, juice, and butter until smooth.

Spread frosting on cooled cookies and garnish with zest.

Let stand for 15 minutes. Enjoy!