Preheat your oven to 400°F. Remove the puff pastry sheet from the freezer and let it thaw completely at room temperature (about 30 minutes)—this prevents cracking and ensures even browning. Once thawed, gently roll it out on a lightly floured surface to about 1/8-inch thickness. Transfer the pastry to a parchment-lined baking sheet and use a fork to prick it all over, leaving about a 1/2-inch border around the edges unpierced. This prevents the center from puffing up too much. Bake for 10 minutes until the pastry is set and begins to lightly golden. Remove from the oven and set aside to cool slightly.

While the pastry bakes, bring 8 cups of salted water to a boil in a large pot. Once boiling, add the trimmed asparagus and cook for exactly 2-3 minutes—you want it tender-crisp, not soft. Immediately transfer the asparagus to a bowl of ice water to stop the cooking process and set its bright green color. Once cooled, drain thoroughly and pat completely dry with paper towels. I find that drying the asparagus well is crucial here; any excess moisture will make the pastry soggy.

While the asparagus cooks, mince the garlic clove finely and zest the lemon into a small bowl—set these aside. Tear the fresh mozzarella into irregular, bite-sized pieces and place in another small bowl. In a separate small bowl, whisk together the extra virgin olive oil, 1/2 teaspoon kosher salt, and 1/4 teaspoon freshly ground black pepper. This seasoned oil will coat the asparagus beautifully and add richness to the final tart.

Spread the torn mozzarella pieces evenly over the par-baked pastry from Step 1, leaving about a 1/2-inch border. Arrange the blanched asparagus from Step 2 on top in a single layer, pointing them in the same direction for a professional presentation. Drizzle the seasoned oil mixture from Step 3 evenly over the asparagus, and sprinkle the minced garlic and lemon zest over the top. I like to add the garlic now rather than earlier because it stays fresh-tasting and doesn't burn in the oven. Bake for 15-18 minutes until the mozzarella is melted and the pastry edges are golden brown.

Remove the tart from the oven and let it cool for 2-3 minutes. Drizzle the balsamic glaze in thin lines across the top for a beautiful finish and sweet-tart flavor contrast. Slice the tart into portions and serve immediately while the pastry is still crispy and the cheese is warm and creamy.