How to make
Fry the finely chopped onion and garlic clove in a pan for 5 minutes.
Add the blanched spinach and cook for another 5 minutes. Add the cream cheese, breadcrumbs and grated Parmesan cheese.
Season with a pinch of black pepper and salt. Remove the skin of the fish. Season with salt.
Spread out a sheet of puff pastry. Put a piece of salmon on it. Spread the spinach stuffing on top.
Fold the puff pastry, by leaving the spinach on top. Using a sharp knife, cut squares into the puff pastry. Spread it with milk.
Bake it in a preheated oven at 390°F (200°C) with a fan on for 5 minutes. Then reduce the heat to 350°F (175°C) and bake for another 25-30 minutes.