1 tablespoon olive oil
25 gram butter
2 leeks finely sliced
1 clove garlic crushed
1 tablespoon light brown sugar
1 tablespoon white wine vinegar
3 sheets puff pastry
200 gram piece brie cheese
24 sprigs lemon thyme
10 mins preparation
35 mins cooking
Preheat oven to 200°C/390°F. Oil two 12-hole (2-tbsp/40ml) deep flat-based patty pans.
In a large frying pan, heat oil and butter; cook leek, stirring, about 5 minutes or until leek softens.
Add garlic, sugar and vinegar; cook, stirring, about 8 minutes or until leek caramelises.
Cut eight squares from each pastry sheet; press one pastry square into each pan hole.
Spoon leek mixture into pastry cases.
Cut cheese into 24 pieces. Place a piece of cheese on each tartlet.
Bake tartlets about 20 minutes. Serve tartlets topped with thyme.