Place a cookie sheet on a rack in the center of the oven. Heat oven to 400˚F or according to puff pastry package instructions. Remove puff pastry from freezer and let stand at room temperature while you make the filling.

Make the filling:

Zest the lemon into a small bowl and set the zest aside. You will use it later. In a medium bowl, beat 1 egg with the goat cheese, Romano cheese, and 1 tablespoon freshly squeezed lemon juice.

Create the tart shell:

When the pastry is pliable enough to work with, generally after 20 to 30 minutes, unfold both sheets on a sheet of parchment paper. Overlap ends by 1 inch, forming 1 long rectangle (about 17 inches x 9 inches); press together to seal.

Beat the remaining egg with 1 teaspoon water, then brush a 1-inch rim of egg wash around the pastry rectangle.

Fold edges inward and press to create a 1-inch border. This acts as a “glue” and creates a picture frame effect. Use additional egg wash to seal corners where they overlap. Brush top of folded rim with egg wash.

Top the tart: 

Spread the goat cheese mixture inside the pastry border. Toss the asparagus with the oil and salt, then arrange in a single layer on top of the cheese. If you want to get fancy, feel free to play with the arrangement of your asparagus.

Bake:

Remove the hot cookie sheet from the oven and add the parchment with the tart; return the cookie sheet to the oven. Bake the tart until golden brown and flaky, 30 to 35 minutes.

Serve:

Sprinkle the lemon zest over the asparagus and then cut the tart into triangles or squares. Serve immediately or let cool on a rack and serve at room temperature.