If making cookies right away, preheat the oven to 350F/180C

Cream the butter, sugar, egg and vanilla until fluffy.

Add the flour, salt and nuts. Mix until a ball forms. I often use my hands to help bring the dough together.

At this point you can chill the dough for a day or so if it's not convenient to make them right away.

Otherwise, form the dough into marble sized balls (a scant teaspoon), place on an ungreased cookie sheet and bake for 15 - 17 minutes. Start checking around 12 minutes.

Roll in powdered sugar as desired.