My mother's famous Melt-Away Shortbread Recipe - this is the smell and taste of Christmas for me.
1 pound butter
1 cup fruit sugar (Redpath makes a melt-away sugar that is even better, but they are evil so it's up to your conscience. I use it only once a year, so I try to assuage my guilt)
3 1/2 cups all purpose flour
1/2 cup rice flour
Warning: this is a bit of a persnickity recipe, so following the instructions in order is important to the outcome. You'll need an electric mixer for the beating part to get the best results. You may want to wash under your nails before starting in case you get more hands-on with the batter.
Preheat the oven to 325 degrees Fahrenheit (165 degrees Celsius)
Mix flours together and set aside.
Measure out sugar.
Beat butter until light and fluffy
Very gradually add sugar, beating all the while
Stir flours into the batter by hand. If you're adventurous, a little bit of true hand mixing (but not quite kneading) might help get the last of the flour absorbed.
Form into semi-flattened balls and bake on parchment paper over a baking pan, on the middle rack, for 17-20 minutes, only until lightly tanned on the bottom (cookies should stay cream coloured). The more round the balls are before flattening, the more perfectly circular your cookies.
Remove from pan immediately to cooling racks.
This will make 3 to 5 dozen round cookies, depending on size (I just got 4 1/2 dozen medium sized). They are rich so you can make them smaller. I usually dip some finished cookies in melted chocolate and cover with sprinkles, but I leave some cookies "naked" because there's pure pleasure to be enjoyed without the chocolate.
You can also roll out the batter and cut into shapes, but they are more prone to breaking than sugar cookies.
Don't double this recipe! I don't know about halfing it, I've never tried.