Ingredients
Method
Preparation
- Preheat the oven to 400°F (200°C) and line a baking sheet with parchment.
- Lightly flour your work surface and roll the thawed puff pastry into a rough 10 × 12‑inch rectangle.
- Transfer the pastry to the prepared sheet and score a 1/2‑inch border all around with a sharp knife. Don’t cut through. Prick the inner rectangle lightly with a fork to dock it. Chill for 5 minutes.
Filling
- In a small bowl, combine the grated Gruyère with crème fraîche (or the beaten egg). Stir in minced garlic if using and season with salt and pepper.
- Spread this mixture evenly inside the scored border.
Cooking
- Bring a pot of salted water to a boil. Blanch the asparagus for 1–2 minutes until bright green and slightly tender, then plunge into ice water to stop cooking. Pat dry.
- Arrange the asparagus spears across the cheese filling. Brush the scored border with olive oil or melted butter.
- Bake for 18–22 minutes until the pastry is puffed and golden. If the asparagus tips brown too quickly, tent loosely with foil.
- Let the tart rest for 3–5 minutes. Finish with a sprinkle of lemon zest and chopped thyme or chives. Slice and serve warm.
Notes
Keep everything cold to help the dough puff evenly. For smaller tarts, cut the puff sheet into two and halve the filling. For a brunch version, add a soft-poached egg on top of each slice.
