Preheat your oven to 350°F (175°C).
In a mixing bowl, cream the softened butter and powdered sugar until light and fluffy.
Add the vanilla extract and mix until combined.
Gradually add the flour and salt, mixing until the dough forms.
If desired, fold in chocolate chips or nuts.
Roll the dough into a log shape and wrap it in plastic wrap.
Chill the dough in the refrigerator for at least 30 minutes.
Slice the chilled dough into ¼-inch thick rounds.
Place the cookies on a baking sheet lined with parchment paper.
Bake in the preheated oven for 20-25 minutes or until lightly golden.