Try this Efi's Baklava recipe, or contribute your own.
The ingredient list omits the chemical reality of butter fat and sugar syrup colliding with fragile paper-thin sheets. Unbaked pastry dries instantly upon air exposure. Keep a slightly damp towel directly over the stack while assembling the pan. Metal pans conduct heat more reliably than ceramic or glass alternatives, ensuring the bottom layers crisp instead of steaming.
Chilling the dessert overnight allows the sugar syrup to migrate completely through the walnut layers. Bring individual portions back to room temperature before eating to restore the crisp crunch of the baked butter fat.