3 large Granny Smith or Honeycrisp apples, peeled and thinly sliced
1/4 cup high-quality honey (clover or wildflower work well)
2 tablespoons unsalted butter, melted
1 teaspoon lemon juice
1/2 teaspoon ground cinnamon
1 egg, beaten (for egg wash)
1/2 teaspoon flaky sea salt (such as Maldon)
1 tablespoon turbinado sugar (optional, for crust)
Instructions
Preheat your oven to 400°F (200°C). Line a large baking sheet with parchment paper to prevent sticking and ensure easy cleanup. Roll out your thawed puff pastry into a rectangle or circle on the parchment paper.
Using a sharp knife, lightly score a 1-inch border around the edge of the pastry. Do not cut all the way through. This allows the edges to rise while the center stays flat under the weight of the apples. Prick the center area inside the border several times with a fork.
In a medium bowl, toss the thinly sliced apples with the lemon juice and cinnamon. The lemon juice prevents browning and adds a necessary hit of acidity to balance the honey.
Carefully arrange the apple slices inside the scored border. You can lay them in overlapping rows or a spiral pattern. The more tightly you pack them, the more impressive the tart will look after baking.
In a small bowl, whisk together the melted butter and 2 tablespoons of the honey. Using a pastry brush, gently coat the apples with about half of this mixture. Brush the outer border of the pastry with the beaten egg and sprinkle with turbinado sugar if desired.
Place the tart in the oven and bake for 25 to 30 minutes, or until the pastry is deeply golden brown and the apples are tender. If the edges are browning too quickly, loosely cover them with foil halfway through.
Remove the tart from the oven. Warm the remaining honey slightly and brush it over the warm apples for a glossy finish. Immediately sprinkle the flaky sea salt over the top of the entire tart.