Preheat your oven to 400°Fahrenheit (204° Celsius).
On a lightly floured surface, roll out the puff pastry to a 16x10-inch rectangle.
Transfer to a parchment-lined sheet pan. Score a 1-inch border around the edges without cutting through. Pierce the inside of the rectangle with a fork at 1/2-inch intervals.
Bake for 10-15 minutes until golden, rotating halfway through.
Make Pesto-Whipped Goat Cheese
In a food processor, blend softened goat cheese until creamy.
Add pesto, garlic, lemon zest and juice, pepper, salt, and basil leaves. Process until smooth. Taste and adjust seasoning to your liking.
Assemble and Bake
Spread the creamy pesto-whipped goat cheese over the warm, baked pastry.
Arrange the beautiful tomato slices on top.
Brush the edges with the whisked egg for a golden finish.
Bake for another 20-25 minutes, rotating halfway through.
Finish and Serve
Let the tart cool for 10 minutes before cutting.
Sprinkle with fresh basil and a touch of flaky sea salt.
Serve immediately and enjoy every bite!
Notes
Thaw the puff pastry properly. Ensure the puff pastry sheet is fully thawed before starting. Thawing in the refrigerator overnight is recommended for best results, but if you're short on time, you can also thaw it at room temperature for about 30-40 minutes.Don't forget to pierce the dough with a fork! After scoring, use a fork to pierce the dough inside the rectangle at 1/2-inch intervals. This prevents the dough from puffing up too much in the center while it bakes, resulting in a perfectly crisp crust.Remember to use softened goat cheese. For the smoothest texture, ensure your goat cheese is softened before blending with the other ingredients in the food processor. This creates a lusciously creamy base for the tart.