Thyme-Infused Caramelized Onion and Goat Cheese Tart: A Gourmet Delight

Make the Dough: In a food processor or large bowl, combine the flour and salt. Add the cold butter and pulse (or use a pastry cutter) until the mixture resembles coarse crumbs. Add ice water one tablespoon at a time, mixing until the dough just comes together.
Chill the Dough: Shape the dough into a disc, wrap in plastic wrap, and refrigerate for at least 30 minutes.
Roll and Prebake: Roll out the dough on a floured surface and fit it into a 9-inch tart pan. Trim the edges and prick the base with a fork. Chill for 10 minutes, then prebake at 375°F (190°C) for 10-12 minutes. Set aside.
Prepare the Filling:
4. Caramelize the Onions: In a large skillet, heat the olive oil and butter over medium heat. Add the sliced onions and cook, stirring occasionally, until golden and caramelized, about 25-30 minutes. Add the sugar for enhanced sweetness, if desired. Stir in the fresh thyme leaves and set aside.
5. Mix the Custard: In a bowl, whisk together the eggs, heavy cream, salt, and pepper.

Assemble and Bake:
6. Layer the Tart: Spread the caramelized onions evenly over the prebaked tart crust. Sprinkle the crumbled goat cheese on top. Pour the egg mixture over the onions and cheese.
7. Bake: Bake the tart at 375°F (190°C) for 25-30 minutes, or until the filling is set and slightly golden.
8. Cool and Garnish: Let the tart cool slightly before garnishing with extra thyme leaves.

Serving and Storage Tips: