01 -
Preheat oven to 200°C and line a baking sheet with parchment paper.
02 -
On a lightly floured surface, roll out puff pastry into a rectangle large enough to encase the salmon and filling.
03 -
In a mixing bowl, combine cream cheese, drained spinach, mozzarella, dill, and green onions if using. Mix until homogeneous. Season with salt and black pepper to taste.
04 -
Place half of the cream cheese mixture in the center of each puff pastry rectangle, spreading slightly to fit the salmon portions. Lay a salmon fillet on top of each mound of filling. Season salmon with salt and pepper.
05 -
Fold puff pastry over salmon and filling to fully encase. Press edges together firmly to seal; use a small amount of water if necessary. Place each parcel seam-side down on the prepared baking sheet and make a few slits on the top surface with a sharp knife to allow steam to escape.
06 -
Beat egg in a small bowl. Brush the tops of the pastry parcels with egg wash for a glossy, golden finish.
07 -
Bake in the preheated oven for 25–30 minutes until puff pastry is crisp and deeply golden brown and the salmon reaches an internal temperature of 63°C.
08 -
Allow the Wellingtons to rest for a few minutes after baking. Slice and serve warm.