Begin by rolling out chilled puff pastry on a lightly floured surface to an ⅛ inch thickness. Use a round cutter to cut out 3-inch circles, then place them on a parchment-lined baking sheet. Chill the circles in the refrigerator for 15 minutes to maintain their shape during baking.

Next, use a smaller round cutter to cut out inner circles in the centers of each pastry round, ensuring you have a border for the filling. The outer edge should still be intact for the lovely puff during baking. Chill the prepared pastry rounds again for another 10 minutes to firm them up.

Preheat your oven to 400°F (200°C) while you prepare the egg wash by whisking an egg in a small bowl. Once the oven is hot, brush the edges of the inner circles with the egg wash, giving them a nice shine and helping to achieve a golden finish during baking.

In a medium skillet, heat a drizzle of olive oil over medium heat. Add thinly sliced sweet onions and sauté until they become golden and caramelized, about 10-15 minutes. Once done, spread the sautéed onions evenly in the center of each puff pastry circle.

Place the baking sheet in the preheated oven and blind bake the pastries for 10 minutes, or until they appear slightly puffed and lightly golden. This step ensures the pastry forms a sturdy base for the delicious fillings that will follow.

After blind baking, remove the pastries from the oven and spoon a generous amount of fig jam over the caramelized onions in each tart. Next, crumble goat cheese on top, distributing it evenly to enhance the flavor in every bite.

Return the filled Goat Cheese and Fig Puff Pastry Tarts to the oven and bake for an additional 12-15 minutes. Keep an eye on them; they are ready when the pastry is a beautiful golden brown and the cheese has softened.

Once out of the oven, let the tarts cool for a few minutes on the baking sheet. For a touch of freshness, garnish with sprigs of fresh thyme or chopped chives before serving these irresistible treats warm, inviting everyone to enjoy their delightful flavors.