French Onion Tart

Instructions

1. 1

   Preheat your oven to 400°F (200°C).

2. 2

   Slice the onions thinly.

3. 3

   Heat the olive oil in a large skillet over medium heat.

4. 4

   Add the sliced onions to the skillet and cook, stirring occasionally, until they are caramelized and golden brown, about 25-30 minutes.

5. 5

   Roll out the puff pastry on a lightly floured surface and place it on a baking sheet lined with parchment paper.

6. 6

   Spread the crème fraîche evenly over the puff pastry, leaving a small border around the edges.

7. 7

   Distribute the caramelized onions over the crème fraîche.

8. 8

   Sprinkle the grated Gruyère cheese and fresh thyme over the onions.

9. 9

   Season with salt and pepper to taste.

10. 10

    Bake in the preheated oven for 20-25 minutes, or until the pastry is golden and the cheese is melted and bubbly.

11. 11

    Remove from the oven and let it cool slightly before slicing and serving.