In a small bowl, pour the tomato sauce and season with salt, oregano, and olive oil to taste.
Drain the mozzarella ball and shred it with your hands, squeezing out as much water as possible. Set aside in another bowl.
Roll out the puff pastry sheet and using a cookie cutter, cut out as many circles as you can. Transfer them to a sheet pan covered with parchment paper.
With a fork, punch a few holes in the center of each circle. Then lightly score the edges to make them puff.
With a spoon, spread the tomato sauce on the puff pastry circles, then sprinkle the mozzarella on top.
Add a couple of basil leaves on top, then bake in the preheated oven for about 15 minutes or until golden on the bottom.
They can be served either warm or room temperature.
Notes
Score a smaller circle or border inside each pastry piece before adding toppings—this helps create a puffed crust edge that looks and tastes just like mini pizzas from a bakery!Or alternatively, you can pre-bake the puff pastry rounds before adding the tomato sauce to get taller and puffier pizza bites.