Combine the sugar and salt in a medium bowl. 3/4 cup granulated sugar,1/8 tsp salt
Pour half of the sugar on a flat surface, like your counter top.
Unfold the Puff Pastry onto the sugar, and pour the rest of the sugar over the top of the pastry. 1 sheet puff pastry
With a rolling pin, roll the dough until its about 10-11 inches square, and the sugar gets pressed into the pastry top and bottom.
Folding against the original folds of the Puff Pastry, fold the sides of the square towards the center so each side goes half way to the middle.
Fold them again so the two sides meet in the middle of the dough. Then fold one half over the other like you're closing a book.
Wrap the roll in plastic wrap and place in the fridge or freezer to chill for 30 minutes.
Preheat the oven to 450 degrees Fahrenheit. Line a baking sheet with parchment paper.
Remove the loaf from chilling, and unwrap. Cut it into slices between 3/8 inch and 1/2 inch.
If the slices have softened while you're cutting them, place them in a ziplock bag and place them in the freezer for 30 minutes, or longer. If still solid, go ahead with baking.
Place the slices about 2 inches apart each, onto the prepared baking sheet.
Bake for 7-9 minutes, as the cookies begin to puff up and expand in the oven, and the bottom just starts to turn golden brown.
Remove from the oven and flip each one over. Bake for another 5-7 minutes, or until golden brown.
Remove from the oven and let them cool on the baking sheet for 5 minutes. Then transfer to a wire rack to cool completely, or enjoy them warm.