Iranian Butter Cookies

[sonia]

A friend brought these over, and they are melt-in-your-mouth delicious. I asked for the recipe, since they're new to me.

Ingredients
Unsalted butter - 1/2 pound (2 sticks)
Confectioner's sugar - 1 cup
Egg yolk - 1
Cardamom, ground - 3/4 teaspoon
Brown rice flour - 2 cups (white rice flour also works)
Salt - 1 pinch
Slivered Almonds or pine nuts - As needed for topping cookies

( Recipe )