Preheat oven to 200°C (400°F). Roll out puff pastry on a floured surface. Shape into a rectangle. Place it on a baking sheet lined with parchment paper.

Peel and slice apples thinly. Put them in a bowl. Add sugar, cinnamon, lemon juice and vanilla. Mix well so all slices are coated evenly.

Place apple slices neatly on the pastry. Leave a small border around the edges. Overlap the slices slightly for a beautiful pattern.

Brush melted butter over the apples and edges. Sprinkle a little flour on the base. This helps absorb moisture and keeps the crust crisp.

Place the tart in the oven. Bake for 40–45 minutes until the crust is golden and apples are soft. Rotate the tray halfway for even baking.

In a small pan, heat apricot jam with water. Stir until smooth and shiny. This glaze will give the tart a beautiful glossy finish.

Remove tart from the oven. While still warm, brush the glaze over apples. This adds shine and enhances the sweet flavor.

Let the tart cool for at least 10 minutes. This helps it set properly. Slice and serve warm or at room temperature.