Pistachio Creamwiches

In a small bowl, stir together the all-purpose flour and salt.
In a medium mixing bowl, beat the softened butter and 1/2 cup powdered sugar with a mixer on medium to high speed until combined.
Beat in the egg until fully combined.
Then, beat in the flour mixture.
Cover the dough and chill it for 1 hour or until it's easy to handle.
Preheat your oven to 350°F (175°C).
Line a cookie sheet with parchment paper.
Shape the chilled dough into 3/4- to 1-inch balls.
Place the balls on the prepared cookie sheet.
Dip the bottom of a glass in granulated sugar and use it to flatten each ball into a 1 1/2-inch circle.
Bake for 7 to 10 minutes or until the bottoms are light brown.
Remove the cookies and let them cool on a wire rack.

In a small bowl, beat together the 1/2 cup powdered sugar, 1/4 cup softened butter, and brandy (or milk) with a mixer on medium to high speed until the mixture is smooth.