Start by marking the puff pastry with a round bowl, drawing 2 circles on the pastry.
Next, cut along the markings with a dough cutter.
Now, with a slotted spoon, mark the center of these pastry circles.
After doing that, cut the cherry tomatoes into rounds and set them aside.
Cut the canned mushrooms into smaller pieces.
In a large skillet over low heat, add a drizzle of olive oil and spread it with a brush.
Add the pastry circles we prepared.
To make the topping, add the tomato sauce and spread well. Add oregano to taste, the mushrooms we prepared, the sliced ham, the tomatoes we sliced earlier and the grated mozzarella cheese.
Cover the skillet and let everything fry for 10 minutes.
Serve.