1 1/4 cups butter; softened
2/3 cup granulated sugar
2 teaspoons pure vanilla extract
2 cups all purpose flour
1/2 cup unsweetened cocoa
1/4 teaspoon salt
1/2 cup finely chopped unsalted peanuts
sifted powdered sugar
Preheat oven to 350 degrees.
Beat butter at medium speed with an electric mixer until creamy, gradually add granulated sugar and vanilla; beating well.
Combine flour, cocoa, salt, and nuts; gradually add to butter mixture; beating until well blended.
Portion dough by teaspoonfuls and roll into balls; place on ungreased baking sheets (I always use parchment paper).
Bake for 8 to 10 minutes.
Roll warm cookies in sifted powdered sugar.