This delicious tart is made with a flaky puff pastry crust, creamy Gruyere cheese, and fresh asparagus. The asparagus is blanched before being added to the tart, ensuring that it stays tender and flavorful. The Gruyere cheese adds a nutty and slightly sweet flavor to the dish, while the crust provides a satisfying crunch. This tart is perfect for a brunch or a light lunch.