1. Preheat the oven to 400°F.
2. Place the puff pastry on a cookie sheet. Roll the edges of the pastry.
3. Brush the pastry with fig jam. Place the sliced figs on the jam. Sprinkle with sugar.
4. In a small bowl, beat the egg yolk with 1 tbsp of water. Use a brush to brush the edges of the tart.
5. Bake for 25 minutes or until the pastry is golden brown. Remove from the oven and serve warm or at room temperature.