Upside-Down Apple Tart

Method

1. Preheat oven to 375°F (190°C).
2. In a oven-safe skillet, melt sugar over medium heat until golden brown.
3. Add butter and stir until fully incorporated.
4. Arrange apple slices in the skillet, season with cinnamon and vanilla.
5. Cover with puff pastry, cut a few slits in the top, and bake for 25-30 minutes.
6. Let cool slightly, then carefully flip onto a serving plate.