In a large skillet cook the bacon until slightly crisp.
Add the onion and asparagus, sauté until the asparagus is tender but still crisp.
Transfer to a bowl and set aside to cool.
Whisk together the eggs and cream.
Add a pinch of nutmeg, salt, pepper and chives to the egg mixture.
Toss together the shredded gruyere cheese and asparagus mixture.
Spread evenly into the pie crust.
Pour egg and cream mixture over the asparagus layer.
Using a small circular cookie cutter to cut shapes from the remaining pie shell. Arrange around the quiche to create a decorative edge.
Arrange several asparagus spears on top to decorate.
Bake for 50-60 minutes until the center of the quiche is set. If the top begins to brown too much, cover with a pie crust shield or foil. Continue baking until done.