Preheat the oven to 350 degrees.
Cream the butter, sugar, egg yolk, vanilla, and orange extract with an electric mixer, (use ¾ cup of Grassland butter, put remaining butter away to use for frosting).
Add remaining ingredients once smooth.
Shape dough into balls- use a cookie scoop to help keep the cookies uniform in size. The dough is dry and crumbly, therefore you will need to compress it together with your hands.
Place balls on a cookie sheet lined with parchment paper.
Flatten each ball with a fork (holding the sides as you flatten the cookie)
Bake in preheated oven for 10 minutes and let cool.
While cookies are cooling, combine remaining 1/4 cup of Grassland butter, salt, powdered sugar, and orange juice, and beat with an electric mixer until smooth.
Top your cookies with the frosting mixture and enjoy.