Put the pecans on parchment and bake in an oven preheated to 350 F for 6-8 minutes. Cool and chop.
Whip the soft butter with sugar until light and fluffy.
Add salt, vanilla, flour. Mix and form the dough. Then add chopped nuts and mix again.
Divide the dough into 12 balls, roll each in sugar. Put on a baking sheet and press down slightly with the bottom of the cup. Stick up the cracks with your fingers. Bake for 15 minutes.