Be sure to apply the egg wash to the entire puff pastry. This also allows your laces to stick on the top.
Frozen spinach is a super great hack! Defrost and drain completely! You can use fresh spinach but if you do, ensure that you cook the spinach down, allow to cool, and drain completely.
I recommend baking this super bowl appetizer on parchment paper as well, to make it easier to move on and off of the pan!