Ingredients
Equipment
Method
- Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper.
- Heat olive oil in a skillet over medium heat. Add sliced onions and cook slowly for 20–25 minutes, stirring occasionally, until golden brown and caramelized.
- Stir in brown sugar and balsamic vinegar, then cook for 2 more minutes. Remove from heat and let cool slightly.
- Roll out puff pastry and cut into 6 equal squares or circles. Place on prepared baking sheet and lightly score a 1 cm border around each tartlet.
- Spread a small spoonful of goat cheese in the center of each pastry square, keeping inside the border. Top with caramelized onions and sprinkle with thyme, salt, and pepper.
- Brush pastry edges with beaten egg. Bake for 18–20 minutes, until puffed and golden.
- Serve warm or at room temperature, optionally drizzled with balsamic glaze.
Notes
Caramelize onions slowly for the best flavor — patience pays off. You can prepare the filling in advance and assemble the tartlets just before baking. Serve warm or at room temperature. Add a drizzle of balsamic glaze for extra depth.