Mix mustard and honey together until smooth and set aside. This will add flavor to your puff pastry with ham, cheese and asparagus.
Cut pastry sheets into four squares.
Spread the honey mustard mixture evenly on the squares.
Place half a piece of ham onto each pastry, covering the center.
Puff pastry with ham, cheese and asparagus needs plenty of asparagus!
Place a slice of cheese on top and season with ground black pepper.
Lift the corners of each puff pastry, overlapping them to enclose the ham, cheese and asparagus filling.
Put each puff pastry with ham, cheese and asparagus on the baking sheet and brush the top with beaten egg yolk.
Bake until the pastries are puffed and golden all over.
Puff pastry with ham, cheese and asparagus is best served hot or warm, as a lovely festive appetizer.