Slice off the tough skin off the bottoms of the asparagus spears.
Divide puff pastry into 6 equal strips.
Cut bacon in half.
With your hands, spread the puff pastry so that it becomes one long strip.
Place the bacon on top with it slightly overlapping the puff pastry.
Season with pepper and place asparagus spear on top.
Tightly roll the bacon and puff pastry around the asparagus.
Once you're done rolling all the asparagus, place them on a baking sheet lined with parchment paper.
Spread mustard on top.
Brush on the egg wash and sprinkle with parmesan cheese.
Bake for 17 minutes at 230 degrees C.