Caramelized onion tart
This tender and delicious onion tart, featuring flaky puff pastry and sweet caramelized onions, is an ideal choice for an appetizer or side dish!
Super easy
45 Mins
This tender and delicious onion tart, featuring flaky puff pastry and sweet caramelized onions, is an ideal choice for an appetizer or side dish!
This recipe is for a 26 cm baking dish.
If using frozen puff pastry, refer to the packaging for proper thawing instructions.
Preheat your oven to 180°C.
Peel the onions and cut them lengthwise, from root to tip, into slices approximately half a centimeter thick
Line the baking dish with parchment paper, lightly grease it with oil, and sprinkle sugar evenly across the surface.
Arrange the onion evenly in a single layer.
Season the onion with salt and sprinkle it with herbs. Fresh thyme and rosemary or a Herbes de Provence mix work well.
Lightly sprinkle the onion with grated Parmesan or mozzarella for added flavor.
Cover the filling with puff pastry and pierce it with a fork in several places. I use a 500-gram pack of pastry, dividing it in half and gently stretching it by hand to match the size of the baking dish.
For a beautifully golden crust, brush the pastry with a beaten egg before baking it in a preheated oven at 180°C for 30-35 minutes.
Take the form out of the oven and let it cool for 20 minutes. Afterward, place a plate over it and gently flip it, so the pastry ends up on the bottom and the filling on top.
