Tomato and Mozzarella Tart

Adjust oven rack to lower-middle position and heat oven to 425 degrees F.

Dust work surface with flour and unfold both pieces puff pastry onto work surface. Form 1 large sheet with border, using beaten egg as directed. Sprinkle Parmesan evenly over shell; using fork, uniformly and thoroughly poke holes in shell. Bake 13 to 15 minutes, then reduce oven temperature to 350 degrees F; continue to bake until golden brown and crisp, 13 to 15 minutes longer. Transfer to wire rack; increase oven temperature to 425 degrees F.

While shell bakes, place tomato slices in single layer on double layer paper towels and sprinkle evenly with 1/2 teaspoon salt; let stand 30 minutes. Place second double layer paper towels on top of tomatoes and press firmly to dry tomatoes. Combine garlic, olive oil, and pinch each salt and pepper in small bowl; set aside.

Sprinkle mozzarella evenly over warm (or cool, if made ahead) baked shell. Shingle tomato slices widthwise on top of cheese (about 4 slices per row); brush tomatoes with garlic oil. Bake until shell is deep golden brown and cheese is melted, 15 to 17 minutes. Cool on wire rack 5 minutes, sprinkle with basil, slide onto cutting board or serving platter, cut into pieces, and serve.

FORMING THE TART SHELL:
Brush egg along one edge of one sheet of puff pastry. Overlap with second sheet of dough by 1 inch and press to seal pieces together.

With rolling pin, smooth out seam. Dough should measure about 18 by 9 inches. Use pizza wheel or knife to trim edges straight.

With pizza wheel or knife, cut 1-inch strip from long side of dough. Cut another 1-inch strip from same side.

Cut 1-inch strip from short side of dough. Cut another 1-inch strip from same side. Transfer pieces of dough to parchment-lined baking sheet and brush with egg.

Gently press long strips of dough onto each long edge of dough and brush with egg. Gently press short strips of dough onto each short edge and brush with egg.

With pizza wheel or knife, trim excess dough from corners.