Delicious "Melt in Your Mouth" Shortbread Cookies Recipe

I like to bake desserts and snacks and one my most popular recipe is my "Melt In your Mouth" shortbread cookies. They are always a big hit especially with my mom and grandma and there are always requests for more. The recipe below yields one dozen cookies.

Ingredients:
1/2 cup butter (although I have noticed that some margarine seems to work better)
1/3 cup confectioners' sugar
2 tablespoons cornstarch
3/4 cup unbleached flour
1 teaspoon of pure vanilla extract or pure almond extract
1 egg (optional)

First, preheat the oven to 350 degrees Fahrenheit. Use an electric beater to whip the softened butter with an electric mixer until the butter appears light and fluffy. Mix in the confectioners' sugar, cornstarch, flour, vanilla/almond extract, and egg (if desired). Beat the mixture on low for about one minute, and then beat on high for about three to four more minutes. Separate spoonfuls size cookie dough two inches apart on a non-greased cookie sheet or pan. Bake the cookies for no more than 10 minutes in the preheated oven. Make sure that the edges don't turn brown too much. Even when done, the majority of the center of the cookies will appear very light with a very, very light brown edging. Cool on wire racks for about another 20 minutes before eating or storing. I noticed that the cookies taste better when they are not enclosed in a storage container, but left outside on a cookie sheet or somewhere out in the open. Enjoy!