Blend together the soft butter, sugar, cornstarch and flour until everything is well incorporated. Cover with plastic and chill for at least an hour.
Preheat oven to 350F
Using a small spoon or a scoop, form small heaps or balls of dough and set them on an ungreased, cookie sheet. You can use parchment paper if you like.
Bake for 12-15 minutes until the bottoms are just starting to turn a light brown. The tops will be white. Let the cookies cool a while on the baking sheet, and then transfer them carefully to a cooling rack. The cookies are very delicate, so use a very thin spatula to move them.
Let them cool completely before frosting.
Make the frosting by mixing the butter, sugar, vanilla, and enough milk or cream to make a spreadable consistency. It should be quite thick.
Dab it on top of the cooled cookies, and garnish with some grated chocolate.
Notes
I used a small 1 1/4 inch cookie scoop to scoop out the dough. Be sure to let your cookie sheets cool down before reusing them, or your cookies will spread.
Make sure your butter is truly at room temperature. If it is chilled it will not get incorporated fully into the dry ingredients and your dough will not come together properly.
These cookies are quite delicate, especially when they are still warm. Move them and frost them gently. You will be rewarded for your efforts.
Nutritional information is provided as a courtesy and is an estimate only. This information comes from online calculators. Although The View from Great Island attempts to provide accurate nutritional information, these figures are only estimates.
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