Recipe(tried): Shortbread Cookies

Hi I am the cookie queen in my family I found this recipe don't no where but I always use as it is peanut free so here it is.

SHORTBREAD COOKIES

2 cups all purpose flour
3 blocks/sticks (1 1/2 cups) butter, room temperature (I use lactania butter)
1 cup icing sugar (confectioner's sugar)
1 cup cornstarch
1 tsp or more milk
Chocolate chips as many as you like

Mix ingredients together in bowl. When mixed put in fridge for 40 to 50 minutes.

Roll out dough into shapes or balls on floured surface. Put on cookie sheet (should make 3 dozen cookies).

Preheat oven to 300 degrees F.

Bake for 25 minutes or until golden brown.