The Caramelized Leek and Brie Tart is a culinary masterpiece that combines the delicate sweetness of caramelized leeks with the rich, creamy brie cheese, all encased in a golden tart crust. Each slice promises an irresistible balance of flavors and textures that will surely impress your guests and elevate any dining occasion.
In a large skillet, heat butter and olive oil over medium-low heat. Add the sliced leeks, salt, pepper, and thyme. Cook, stirring occasionally, until the leeks are soft and caramelized, about 15 minutes.
Add the white wine to the skillet, scraping up any browned bits from the bottom. Cook for another 2-3 minutes until the wine is mostly evaporated. Remove from heat and let cool slightly.
In a mixing bowl, whisk together the heavy cream, sour cream, eggs, and Dijon mustard until well combined.
Layer the caramelized leeks evenly over the bottom of the tart crust. Pour the cream mixture over the leeks.
Arrange the slices of brie cheese on top of the tart.
Bake the tart in the preheated oven for 25-30 minutes, or until the filling is set and the top is golden brown.
Let the tart cool slightly before slicing and serving.