Preheat oven to 180C/350F. Line a baking tray with parchment paper.

Place the Filling ingredients in a bowl and use your hands to mix together. It should be quite soft and wet, not dry and crumbly.

Place the filling onto the puff pastry. Shape into a loaf and roll the puff pastry up, ending with the seam side down.

Transfer to baking tray. Cut a few diagonal slashes across the top.

Brush with egg wash and bake for 35 to 40 minutes, or until the pastry is deep golden brown. Turn the tray at around 25 minutes for even browning.

Remove from the oven. Rest for 5 minutes before serving.