Roll out the pizza dough into the rectangular shape, place some mozzarella cheese and fold it from two side, and place it into the doughnut shaped mould.
Top with marinara sauce and mozzarella cheese.
Cut the pepperoni into the small circles with something like piping nozzle.
finally grate some parmesan cheese on top.
Bake it in a pre-heated oven at 250’C for 10-15 minutes.