Slice tomatoes fairly thin and place on paper towel. Sprinkle with salt. Let sit for over 30-45 minutes
Place puff pastry sheet on baking sheet lined with parchment paper.
Brush puff pastry with beaten egg.
Cover puff pastry with parmesan cheese.
Poke with a fork all over.
Place puff pastry in 425 degree oven and bake for 20 minutes. Let cool a bit.
Meanwhile, use a paper towel to dab off the liquid on the top of the tomatoes. Place tomatoes on top of cooled pastry.
Cover with mozzarella cheese.
Mix olive oil and garlic together. Brush on top of cheese.
Bake the tart for 10-15 more minutes.
After removing from oven sprinkle with fresh basil.