Preheat oven to 400º
On a lightly floured surface, unfold puff pastry.
Roll into a 16 x 12" rectangle, cut into twelve 4" squares.
Place in greased muffin cups, pressing gently onto bottoms and up sides, allowing corners to point up.
Break and slip an egg into center of each pastry cup; sprinkle with Canadian bacon.
Bake until pastry is golden brown, egg whites are completely set and yolks begin to thicken, but are not hard, 10-12 minutes approx.
Meanwhile, prepare the hollandaise sauce according to pkg. directions.
Remove pastry cups to wire racks.
Serve warm with hollandaise sauce.