Preheat oven to 325 degrees Fahrenheit.
Use an electric mixer to cream together butter and sugar until fluffy. Add vanilla and mix again.
Sift together flour and salt. Stir into the butter mixer.
Use a wooden spoon to mix in pecans. Dough will be crumbly, like sand, but you should be able to form it into balls.
Form the cookies into balls about 1 inch across. They will not grow or spread in the oven, so whatever size you form them is the size they will stay. Put the cookies on an ungreased cookie sheet and bake for 25 minutes.
Once cooled, dust cookies with powdered sugar and enjoy
Note: Cookies should hold their shape and be similar to a shortbread texture.