Step 1

Preheat the oven to 350°F (180°C). Line a baking sheet with parchment paper.

Step 2

Lay the puff pastry on a lightly floured surface and cut into 8 equal rectangles (about 1¼ x 4-inches). Arrange on the prepared baking sheet, leaving space between.

Step 3

In a medium bowl, sift the confectioners' sugar to remove any clumps. Add the egg whites and mix until icing is well combined.

Step 4

Brush the top of each pastry evenly with the icing.

Step 5

In a small bowl, strain the jam to remove any lumps. Transfer to a piping bag. Pipe Xs on top of the icing to create a pattern.

Step 6

Bake for 20 minutes, or until golden brown and crispy. Remove from the oven and let cool completely.

Step 7

Enjoy!