01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - Unroll puff pastry onto prepared baking sheet. Score a 1/2 inch border around edges without cutting through. Prick pastry inside border with fork.
03 - In a bowl, mix crème fraîche, goat cheese, egg, parmesan, lemon zest, salt, and pepper until smooth.
04 - Spread cheese mixture evenly over pastry, keeping within scored border.
05 - Arrange asparagus spears and spring onions on top. Brush asparagus lightly with olive oil and season with additional salt and pepper.
06 - Bake in center of oven for 22-25 minutes until pastry is golden and crisp and asparagus is tender.
07 - Remove from oven, let cool 5 minutes, then garnish with fresh herbs and serve with lemon wedges if desired.