Dad's Birthday: 1st Dessert : Cookies

Me love cookies! Its that simple. Here is the recipe:

Citrus Butter Cookies
Makes about 24 cookies

Cookies:

2 large eggs
4 sticks (1 pound) of butter, softened
1 1/2 cups of sugar
3 tablespoons of orange, lime, and lemon zest (1 tablespoon each)
4 cups of all purpose flour
2 tablespoons of orange, lemon, or lime juice (2 tablespoons total)

Icing:

3 cups of powdered sugar
2 tablespoons of whole milk
2 tablespoons of combined orange, lemon, and lime zest
Juice of 1/2 of a lime
Juice of 1/2 a lemon
Dash of salt
Extra zest, for decorating

Preheat the oven to 350 degrees.
Separate the eggs. Set aside one of the egg whites for the icing.
Using a standing mixer, cream the butter, and the sugar until combined..
Add the egg yolks and mix until combined.
Add the 3 tablespoons of the citrus zest, then add the flour, and mix until just combined.
Next, add 2 tablespoons of citrus juice (your choice) and mix until the dough comes together.
Scoop out heaping teaspoons of dough, then roll them into balls between your hands, and place them on a baking sheet, with a silpat.
Bake them for 12-13 minutes, or until they're not quite turning brown.
Remove them from the oven but keep them on the cookie sheet for 3-4 minutes.
Use a spatula to move them to a cooling rack, and cool them completely.
To make the icing:
Combine the egg white with the rest of the icing ingredients, except the extra zest. Whisk throughly until combined, adding either more powdered sugar, or more juice until it reaches the consistency of pourable, yet still thick.
Put it in a squirt bottle.
Drizzle the icing across the cookies in several lines, and repeat in the other direction.Sprinkle them with the extra zest, before the icing sets.