Mushroom and Ham Puff Pastry

2 tbsp chopped fresh parsley

Salt, freshly ground black pepper

A pinch of nutmeg (optional)

To assemble:
1 roll of pure butter puff pastry (300 to 350 g)

1 egg yolk + 1 teaspoon water for egg wash

Preparation:

1.
Prepare the filling In a large skillet, heat the olive oil over medium heat. Sauté the onion or shallot until it becomes translucent.

Add the mushrooms and cook until the water has completely evaporated. Season lightly with salt.

Stir in the ham and sauté for a few minutes.

Add the butter, then dust in the flour. Toss to coat the ingredients well.

Gradually pour in the warm milk, stirring constantly until you get a smooth sauce.

Off the heat, stir in the grated cheese, parsley, pepper and, if desired, a pinch of nutmeg.