01 - 
                Preheat oven to 200°C and line a baking sheet with parchment paper.
              
              
              
                02 - 
                Clean portobello mushrooms thoroughly, trimming stems as needed. Arrange mushrooms gill side up on the prepared baking sheet.
              
              
              
                03 - 
                Lightly season each mushroom cap with salt and black pepper.
              
              
              
                04 - 
                Distribute approximately 60 ml of pizza sauce into each mushroom cap, spreading evenly.
              
              
              
                05 - 
                Top each filled mushroom with shredded mozzarella cheese and arrange selected toppings as desired.
              
              
              
                06 - 
                Transfer the baking sheet to the oven and bake for 15–20 minutes, or until the cheese is fully melted, bubbling, and mushrooms are cooked through.
              
              
              
                07 - 
                Remove from oven, garnish with fresh basil leaves, and serve hot.