Ingredients
Scale
- 1 sheet all-butter puff pastry, about 14 oz / 400 g, thawed if frozen
- 1 lb asparagus, trimmed, 450 g
- 1 1/2 cups Gruyère, grated, About 5–6 oz / 150–170 g
- 1 large egg
- 1 tablespoon milk, for egg wash
- 1/3 cup crème fraîche
- 1 teaspoon Dijon mustard
- 1 tablespoon olive oil or melted butter
- 1/2 teaspoon kosher salt, plus more to taste
- Freshly ground black pepper
- Zest of 1/2 lemon, optional
- 2 teaspoons lemon juice, optional
- 1 tablespoon chopped chives and/or tarragon, or parsley
- Flaky salt, optional
Instructions
- Preheat the oven to 425°F (220°C) and line a baking sheet with parchment paper.
- Prepare the asparagus by trimming the tough ends and peeling the bottom third if the spears are thick.
- Place the puff pastry on the parchment and roll out gently if necessary. Score a 1-inch border around the edge and prick the center area with a fork.
- Combine the crème fraîche and Dijon mustard; spread this mixture inside the scored border. Sprinkle most Gruyère over the crème fraîche, saving some for later.
- Arrange the asparagus in a neat pattern on the tart, drizzling with olive oil or brushing with melted butter, and seasoning with salt and pepper. Top with reserved Gruyère.
- Whisk the egg and milk together, then brush the mixture around the border of the tart for a golden finish.
- Bake the tart in the preheated oven for 18–25 minutes, or until golden and puffed with bubbling cheese, rotating the pan halfway through if needed.
- Let cool for 5–10 minutes, then add lemon zest, a squeeze of lemon juice, and herbs, finishing with flaky salt and extra pepper if desired.
Last Step:
Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.Notes
Use fresh asparagus for the best flavor and texture.
Feel free to substitute Gruyère with another cheese like cheddar or mozzarella if preferred.
Adding a squeeze of lemon juice brightens the flavors of the tart.
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Category: Dinner
- Method: Baking
- Cuisine: French
Nutrition
- Serving Size: 1 slice
- Calories: 290
- Sugar: 1g
- Sodium: 350mg
- Fat: 21g
- Saturated Fat: 8g
- Unsaturated Fat: 13g
- Trans Fat: 0g
- Carbohydrates: 20g
- Fiber: 2g
- Protein: 7g
- Cholesterol: 70mg