Mushroom and Ham Puff Pastry

Preparation:

1. Prepare the filling

In a large skillet, heat the olive oil over medium heat. Sauté the onion or shallot until translucent.

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

Add the ham and let it brown for a few minutes.

Add the butter, then sprinkle in the flour. Mix to coat the ingredients well.

Gradually pour in the lukewarm milk, stirring constantly until you obtain a smooth sauce.

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

Allow the filling to cool before assembly.