On a flat surface, roll out the date paste between two sheets of parchment paper into a rectangle measuring 30 × 22 cm (12 × 7 inches).
Once the dough has doubled in size, divide it into two equal portions.
Roll out each portion of dough between two sheets of lightly floured parchment paper into a rectangle measuring 30 × 22 cm (12 × 7 inches) and about 1¼ cm (½ inch) thick.
Peel off the top sheet of parchment paper from each dough rectangle. Invert the date paste onto one of the dough rectangles.
Carefully place the second dough rectangle on top of the date paste layer.
Using a pizza cutter, cut the dough into three equal portions.
Roll each portion tightly into a log, jelly-roll style, starting from the long side. Gently roll each log back and forth several times to smooth it out.
Gently roll each log back and forth several times to smooth it out.
Using a sharp knife, cut each log into equal slices, about 2.5 cm (1 inch) wide.
Transfer the cookies to a baking sheet lined with parchment paper. Brush the top of each cookie with the egg wash.
Bake in a preheated oven at 200°C (400°F) for about 12 minutes, or until the cookies are golden brown. Enjoy!