Christmas treats: Melt-in-your-mouth Shortbread

Now these little cookies don't look like much and even after my attempts to make them Christmas-y they still aren't real pretty.  But they are delicious and really do melt in your mouth.  When I first saw the recipe and read the reviews I was calling bullcrap.  Nope.  They are good.  And easy.  Luke will definitely be trying some of these once I actually start getting treats out of the freezer (Black Friday!).

Melt-in-Your-Mouth Shortbread
Ingredients
-1 cup of butter (2 sticks), softened
-1/2 cup powdered sugar
-1/4 cup cornstarch
-1 1/2 cups flour
-green and/or red food coloring (optional)

Directions
1) Preheat the oven to 375°.
2) Beat the butter with a mixer until fluffy.  Add the powdered sugar, cornstarch, and flour.  Mix on low speed until combined.  If using, add drops of food coloring until you achieve your desired color. 
3) Beat on high speed for 3-4 minutes.  The dough should be pretty fluffy.
4) Roll the dough into balls about ping-pong ball sized and place on an ungreased cookie sheet.  Bake for about 15 minutes.  They will start to turn brown if they are in the oven for too long.  If they are brown they are definitely done (although not ruined).
5) Cool on wire racks.  These can be frozen (where mine currently are).

I usually make two batches - one red/pink and one green.  I've thought about putting the dough into a pastry bag and piping out the cookies in an attempt to make them prettier...but then decided I didn't care that much what they looked like.  I will eat them regardless of how they look. =)

Source: barely adapted from AllRecipes