Let the puff pastry thaw at room temperature. Preheat oven to 425°F. Line two baking sheets with parchment paper or silicone baking mat.
Take one sheet of puff pastry and unfold it. Generously sprinkle it with granulated sugar. Bring the left side and right side to meet in the middle then sprinkle again with sugar. Fold it in half horizontally, so the top and bottom meet then sprinkle again with sugar. Finally, fold it in half vertically like a book, so that the left side meets the right side. You should have four layers of puff pastry on one side of the palmier log. Repeat the process with the second sheet of puff pastry.
Using a sharp knife, slice the log into 1/4-inch thick cookies. Transfer onto a baking sheet and space them 2 inches apart.
Bake about 10 minutes or until golden brown around the edges. Let the palmiers cool on the baking sheet before serving.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.